Subclasses list

• 1 CHIMNEY OR STACK 
  Patents: 36
  Patent Applications: 13
• 2 Vehicle 
  Patents: 14
  Patent Applications: 3
• 3 Chimneytop or stacktop structure (e.g., cowl) 
  Patents: 29
  Patent Applications: 10
• 4 Cap closure 
  Patents: 32
  Patent Applications: 16
• 5 Pivoted 
  Patents: 22
  Patent Applications: 2
• 6 Plural, separately pivoted portions 
  Patents: 1
  Patent Applications: 1
• 7 Having remote control 
  Patents: 15
  Patent Applications: 0
• 8 Inlet and outlet 
  Patents: 23
  Patent Applications: 2
• 9 Having air current responsive adjustment means (e.g., wind vane, etc.) 
  Patents: 2
  Patent Applications: 1
• 10 Inlet 
  Patents: 4
  Patent Applications: 0
• 11 Having air current responsive adjustment means (e.g., wind vane, etc.) 
  Patents: 2
  Patent Applications: 0
• 12 With means for mounting on brick-type chimney 
  Patents: 25
  Patent Applications: 5
• 13 Chimneytop structure extends within chimney 
  Patents: 7
  Patent Applications: 0
• 14 Means for mounting to inner wall 
  Patents: 14
  Patent Applications: 2
• 15 With rotary means in air current (e.g., fan, etc.) 
  Patents: 10
  Patent Applications: 0
• 16 Driven by external power source 
  Patents: 29
  Patent Applications: 2
• 17 Having air current responsive adjustment means (e.g., wind vane, etc.) 
  Patents: 5
  Patent Applications: 3
• 18 Cage-type blade set 
  Patents: 21
  Patent Applications: 0
• 19 Including additional blade set 
  Patents: 9
  Patent Applications: 0
• 20 Having air current responsive adjustment means 
  Patents: 4
  Patent Applications: 1
• 21 Wind vane 
  Patents: 7
  Patent Applications: 0
• 22 With air current inducing jet 
  Patents: 4
  Patent Applications: 0
• 23 Centered within induced air current 
  Patents: 0
  Patent Applications: 0
• 24 Shield 
  Patents: 2
  Patent Applications: 0
• 25 Hood having outlet opening perpendicular to wind 
  Patents: 3
  Patent Applications: 0
• 26 Current regulator 
  Patents: 3
  Patent Applications: 0
• 27 Having readily movable air current regulating means 
  Patents: 4
  Patent Applications: 1
• 28 With temperature sensitive release 
  Patents: 4
  Patent Applications: 0
• 29 Continuously horizontal panel 
  Patents: 8
  Patent Applications: 1
• 30 Pivoted 
  Patents: 7
  Patent Applications: 0
• 31 Plural 
  Patents: 4
  Patent Applications: 0
• 32 T-top 
  Patents: 1
  Patent Applications: 0
• 33 Spiral or plural stacked rings 
  Patents: 10
  Patent Applications: 0
• 34 Four-side outlets with shield 
  Patents: 3
  Patent Applications: 0
• 35 Spaced cap 
  Patents: 26
  Patent Applications: 1
• 36 And spaced shield 
  Patents: 8
  Patent Applications: 1
• 37 And skirt deflector extending outwardly from chimney or stack 
  Patents: 4
  Patent Applications: 0
• 38 And skirt deflector extending outwardly from chimney or stack 
  Patents: 11
  Patent Applications: 0
• 39 Having air current inducing jet 
  Patents: 16
  Patent Applications: 2
• 40 Plural, in-series jets 
  Patents: 5
  Patent Applications: 1
• 41 Having liquid drain 
  Patents: 7
  Patent Applications: 2
• 42 Having internal air current guide 
  Patents: 9
  Patent Applications: 5
• 43 Having flue heater 
  Patents: 18
  Patent Applications: 2
• 44 Having lining or sleeve 
  Patents: 27
  Patent Applications: 4
• 45 Including breech opening 
  Patents: 11
  Patent Applications: 1
• 46 Pressurized air lining 
  Patents: 8
  Patent Applications: 0
• 47 Axially connected chimney or stack sections 
  Patents: 16
  Patent Applications: 0
• 48 EXTERIOR VAULT OR MANHOLE COVER 
  Patents: 10
  Patent Applications: 1
• 49 WORKSTATION VENTILATOR (E.G., HOOD, OFFTAKE, ETC.) 
  Patents: 183
  Patent Applications: 39
• 50 Spray booth 
  Patents: 80
  Patent Applications: 9
• 51 Having air inlet separate from access opening 
  Patents: 37
  Patent Applications: 1
• 52 Ceiling inlet 
  Patents: 93
  Patent Applications: 5
• 53 With outlet air treatment means 
  Patents: 100
  Patent Applications: 9
• 54 With means for liquid contact 
  Patents: 95
  Patent Applications: 2
• 55 Spraying nozzle 
  Patents: 26
  Patent Applications: 1
• 56 Covered workbench chamber (e.g., fume hood, etc.) 
  Patents: 176
  Patent Applications: 29
• 57 Having air inlet separate from access opening 
  Patents: 112
  Patent Applications: 10
• 58 Including flow adjustment means 
  Patents: 31
  Patent Applications: 0
• 59 Responsive to position of access door 
  Patents: 32
  Patent Applications: 0
• 60 And air outlet through access opening 
  Patents: 15
  Patent Applications: 1
• 61 Having outlet airway flow adjustment means 
  Patents: 79
  Patent Applications: 16
• 62 Plural airways with adjustable distribution means 
  Patents: 22
  Patent Applications: 2
• 63 Movable 
  Patents: 131
  Patent Applications: 14
• 64 Having sliding, communication, airway duct sections 
  Patents: 48
  Patent Applications: 3
• 65 Having canopy exhaust hood 
  Patents: 53
  Patent Applications: 7
• 66 Having inlet airway 
  Patents: 69
  Patent Applications: 16
• 67 Having canopy exhaust hood 
  Patents: 105
  Patent Applications: 11
• 68 ELEVATOR 
  Patents: 15
  Patent Applications: 6
• 69 VEHICLE (E.G., AUTOMOBILE, ETC.) 
  Patents: 141
  Patent Applications: 53
• 70 Pressure regulation 
  Patents: 33
  Patent Applications: 10
• 71 Ventilation of aircraft cabin 
  Patents: 46
  Patent Applications: 19
• 72 Auxiliary control system 
  Patents: 18
  Patent Applications: 6
• 73 Mechanical operation of control system (e.g., by bellows or diaphragm, etc.) 
  Patents: 24
  Patent Applications: 5
• 74 Control system having electrical or electronic component 
  Patents: 56
  Patent Applications: 32
• 75 Having automatic control means 
  Patents: 286
  Patent Applications: 76
• 76 Aircraft 
  Patents: 102
  Patent Applications: 77
• 77 Freight 
  Patents: 5
  Patent Applications: 1
• 78 Waterborne 
  Patents: 29
  Patent Applications: 6
• 79 Freight 
  Patents: 2
  Patent Applications: 0
• 80 Nonperishable bulk foodstuff (e.g., grain ship) 
  Patents: 1
  Patent Applications: 0
• 81 Porthole ventilator 
  Patents: 2
  Patent Applications: 1
• 82 With moisture deflector or drain 
  Patents: 13
  Patent Applications: 0
• 83 Railcar, bus, or trailer 
  Patents: 5
  Patent Applications: 5
• 84 Locomotive cab 
  Patents: 5
  Patent Applications: 0
• 85 Condensation preventer (e.g., defroster, etc.) 
  Patents: 5
  Patent Applications: 0
• 86 Including dust guard for cab window opening 
  Patents: 1
  Patent Applications: 1
• 87 Sleeping car 
  Patents: 2
  Patent Applications: 0
• 88 Freight 
  Patents: 7
  Patent Applications: 1
• 89 Ice-bunker closure (e.g., for refrigerated railcar) 
  Patents: 2
  Patent Applications: 0
• 90 Refrigerated or heated 
  Patents: 16
  Patent Applications: 1
• 91 With air pump 
  Patents: 18
  Patent Applications: 0
• 92 With air pump 
  Patents: 2
  Patent Applications: 0
• 93 Condensation preventer (e.g., defroster, etc.) 
  Patents: 12
  Patent Applications: 1
• 94 Having exterior cap closure for vent 
  Patents: 21
  Patent Applications: 1
• 95 Having window or entry-door ventilation structure 
  Patents: 4
  Patent Applications: 0
• 96 Including dust guard for window opening 
  Patents: 2
  Patent Applications: 1
• 97 Inside of window 
  Patents: 1
  Patent Applications: 0
• 98 Outside of window 
  Patents: 0
  Patent Applications: 0
• 99 Having forced recirculation 
  Patents: 11
  Patent Applications: 1
• 100 Having forced recirulation means alone 
  Patents: 8
  Patent Applications: 0
• 101 Wind-operated fan 
  Patents: 1
  Patent Applications: 0
• 102 Wheel-axle operated fan 
  Patents: 0
  Patent Applications: 0
• 103 Having both inlet and outlet airways 
  Patents: 7
  Patent Applications: 0
• 104 Including unitary inlet and outlet housing 
  Patents: 4
  Patent Applications: 0
• 105 With air pump 
  Patents: 15
  Patent Applications: 1
• 106 Wind or wheel-axle operated 
  Patents: 0
  Patent Applications: 0
• 107 Having inlet airway 
  Patents: 6
  Patent Applications: 5
• 108 Including specific air distributor 
  Patents: 17
  Patent Applications: 5
• 109 Having adjustable deflector 
  Patents: 4
  Patent Applications: 3
• 110 Liquid contact 
  Patents: 2
  Patent Applications: 0
• 111 With deflecting separator-type filter 
  Patents: 2
  Patent Applications: 0
• 112 With air pump 
  Patents: 10
  Patent Applications: 1
• 113 Wind operated 
  Patents: 0
  Patent Applications: 0
• 114 Wheel-axle operated 
  Patents: 0
  Patent Applications: 0
• 115 Having outlet airway 
  Patents: 8
  Patent Applications: 2
• 116 With current inducing jet 
  Patents: 1
  Patent Applications: 1
• 117 With air pump (e.g., wind or wheel-axle operated, etc.) 
  Patents: 7
  Patent Applications: 0
• 118 Freight 
  Patents: 48
  Patent Applications: 18
• 119 Having external connection 
  Patents: 25
  Patent Applications: 5
• 120 Seat structure 
  Patents: 76
  Patent Applications: 15
• 121 Condensation preventer (e.g., defroster, etc.) 
  Patents: 264
  Patent Applications: 49
• 122 Air directed between double paned window 
  Patents: 6
  Patent Applications: 1
• 123 Air directed at window exterior 
  Patents: 11
  Patent Applications: 2
• 124 Side or rear window 
  Patents: 43
  Patent Applications: 2
• 125 Having sweeping air distributor 
  Patents: 18
  Patent Applications: 1
• 126 Having means for combining heated and unheated air 
  Patents: 71
  Patent Applications: 3
• 127 Having dashboard air distributor (e.g., for windshield, etc.) 
  Patents: 92
  Patent Applications: 12
• 128 Means for open window (e.g., deflector, etc.) 
  Patents: 28
  Patent Applications: 4
• 129 Sunroof 
  Patents: 43
  Patent Applications: 4
• 130 Windshield or rear window 
  Patents: 10
  Patent Applications: 3
• 131 At upper edge of sliding window 
  Patents: 38
  Patent Applications: 3
• 132 Having means to selectively adjust airflow 
  Patents: 9
  Patent Applications: 1
• 133 Having plural air passages 
  Patents: 16
  Patent Applications: 0
• 134 Pivoted window 
  Patents: 7
  Patent Applications: 1
• 135 Adjacent front edge of window 
  Patents: 16
  Patent Applications: 0
• 136 Roof structure 
  Patents: 84
  Patent Applications: 11
• 137 Including duct extending along roof 
  Patents: 64
  Patent Applications: 10
• 138 Having exterior inlet opening over windshield 
  Patents: 15
  Patent Applications: 0
• 139 Having forced recirculation 
  Patents: 106
  Patent Applications: 21
• 140 Forced recirculation alone or agitating fan 
  Patents: 16
  Patent Applications: 7
• 141 Having both inlet and outlet airways 
  Patents: 42
  Patent Applications: 22
• 142 Including unitary inlet and outlet housing 
  Patents: 9
  Patent Applications: 5
• 143 Having inlet airway 
  Patents: 97
  Patent Applications: 46
• 144 Including duct extending along floor 
  Patents: 36
  Patent Applications: 4
• 145 Selective inlet, outlet, and closure 
  Patents: 32
  Patent Applications: 19
• 146 Including exterior cowl inlet 
  Patents: 42
  Patent Applications: 2
• 147 With moisture deflector or drain 
  Patents: 46
  Patent Applications: 3
• 148 Ducting to heat exchanger 
  Patents: 23
  Patent Applications: 4
• 149 Having exterior door 
  Patents: 4
  Patent Applications: 0
• 150 Including exterior windshield inlet 
  Patents: 5
  Patent Applications: 0
• 151 Including exterior rear or rear-side inlet 
  Patents: 17
  Patent Applications: 2
• 152 Including specific air distributor 
  Patents: 83
  Patent Applications: 70
• 153 Sweeping type 
  Patents: 23
  Patent Applications: 4
• 154 Having swiveling nozzle 
  Patents: 39
  Patent Applications: 6
• 155 Having adjustable deflector 
  Patents: 176
  Patent Applications: 67
• 156 With air treatment means 
  Patents: 268
  Patent Applications: 45
• 157 Liquid contact 
  Patents: 48
  Patent Applications: 6
• 158 Porous filter 
  Patents: 172
  Patent Applications: 14
• 159 Heating 
  Patents: 62
  Patent Applications: 15
• 160 Having means for combining heated and unheated air 
  Patents: 139
  Patent Applications: 11
• 161 Having heat exchange core 
  Patents: 115
  Patent Applications: 7
• 162 Having outlet airway 
  Patents: 74
  Patent Applications: 26
• 163 With current inducing jet 
  Patents: 4
  Patent Applications: 1
• 164 Exterior side outlet 
  Patents: 42
  Patent Applications: 9
• 165 Exterior rear outlet 
  Patents: 16
  Patent Applications: 2
• 166 VEHICULAR TUNNEL 
  Patents: 10
  Patent Applications: 1
• 167 With air pump 
  Patents: 6
  Patent Applications: 2
• 168 MINE 
  Patents: 27
  Patent Applications: 3
• 169 With partition means (e.g., brattice, etc.) 
  Patents: 42
  Patent Applications: 6
• 170 Flexible sheet 
  Patents: 23
  Patent Applications: 3
• 171 Having inlet and outlet ductwork 
  Patents: 6
  Patent Applications: 1
• 172 Having inlet ductwork 
  Patents: 10
  Patent Applications: 0
• 173 STORAGE AREA FOR PERISHABLES 
  Patents: 8
  Patent Applications: 8
• 174 Harvested crop ventilation 
  Patents: 20
  Patent Applications: 6
• 175 Having perforated or slotted duct contacting crop 
  Patents: 5
  Patent Applications: 3
• 176 Including insertion means 
  Patents: 3
  Patent Applications: 0
• 177 Horizontal and vertical perforated or slotted ducts 
  Patents: 0
  Patent Applications: 0
• 178 With air pump 
  Patents: 2
  Patent Applications: 0
• 179 Horizontal duct 
  Patents: 5
  Patent Applications: 0
• 180 With air pump 
  Patents: 10
  Patent Applications: 0
• 181 With air pump 
  Patents: 6
  Patent Applications: 0
• 182 Granular crop or corn ears 
  Patents: 53
  Patent Applications: 2
• 183 Provision safe 
  Patents: 6
  Patent Applications: 0
• 184 ELECTRONIC CABINET 
  Patents: 869
  Patent Applications: 241
• 185 HOLLOW PARTITION 
  Patents: 76
  Patent Applications: 10
• 186 Having blower 
  Patents: 90
  Patent Applications: 11
• 187 CLEAN ROOM 
  Patents: 468
  Patent Applications: 67
• 188 HAVING PROTECTING AIR CURRENT 
  Patents: 114
  Patent Applications: 14
• 189 Surrounding protected area 
  Patents: 54
  Patent Applications: 5
• 190 Including plural, layered currents 
  Patents: 40
  Patent Applications: 1
• 191 Including suction outlet 
  Patents: 52
  Patent Applications: 6
• 192 Including current adjusting mean 
  Patents: 28
  Patent Applications: 5
• 193 Cabinet enclosure (e.g., display case, etc.) 
  Patents: 53
  Patent Applications: 7
• 194 BLAST OR SHOCK WAVE PREVENTION 
  Patents: 19
  Patent Applications: 4
• 195 MEANS COMBINED WITH DOOR 
  Patents: 77
  Patent Applications: 23
• 196 MEANS COMBINED WITH WINDOW 
  Patents: 23
  Patent Applications: 8
• 197 For bed or couch 
  Patents: 4
  Patent Applications: 0
• 198 Condensation preventer 
  Patents: 11
  Patent Applications: 2
• 199 Skylight 
  Patents: 17
  Patent Applications: 1
• 200 With air pump 
  Patents: 29
  Patent Applications: 7
• 201 Cooling air conditioner 
  Patents: 36
  Patent Applications: 3
• 202 Having readily moveable flow control means 
  Patents: 33
  Patent Applications: 3
• 203 With extensible side panel 
  Patents: 9
  Patent Applications: 1
• 204 With mounting or support means 
  Patents: 10
  Patent Applications: 0
• 205 Recirculation means 
  Patents: 8
  Patent Applications: 1
• 206 With specific noise inhibiting structure 
  Patents: 5
  Patent Applications: 1
• 207 With specific filtering means 
  Patents: 4
  Patent Applications: 0
• 208 Propeller fan having rotary axis perpendicular to window 
  Patents: 16
  Patent Applications: 3
• 209 With mounting means for pump reversal 
  Patents: 3
  Patent Applications: 0
• 210 With extensible side panel 
  Patents: 11
  Patent Applications: 0
• 211 Having air passage in sash 
  Patents: 9
  Patent Applications: 2
• 212 Having air passage means within, attaching to, or replacing pane 
  Patents: 24
  Patent Applications: 3
• 213 Having air passage at window top 
  Patents: 34
  Patent Applications: 1
• 214 Having air passage between sill and bottom of sash 
  Patents: 8
  Patent Applications: 0
• 215 Including wall sloping downward from window 
  Patents: 3
  Patent Applications: 0
• 216 Including wall for upwardly deflecting inlet air 
  Patents: 1
  Patent Applications: 0
• 217 Having adjustable angle or swingable mounting 
  Patents: 0
  Patent Applications: 0
• 218 Including collapsible or flexible, perpendicular side wall 
  Patents: 0
  Patent Applications: 0
• 219 Having readily moveable air regulating means 
  Patents: 3
  Patent Applications: 0
• 220 Having slidably interconnected sections 
  Patents: 5
  Patent Applications: 0
• 221 Including louvers 
  Patents: 9
  Patent Applications: 0
• 222 Including readily moveable air regulating means 
  Patents: 5
  Patent Applications: 0
• 223 With means for liquid contact 
  Patents: 2
  Patent Applications: 1
• 224 Having louvers 
  Patents: 16
  Patent Applications: 1
• 225 Tilting pane window 
  Patents: 4
  Patent Applications: 2
• 226 Having wind deflector 
  Patents: 3
  Patent Applications: 0
• 227 Including backdraft preventer 
  Patents: 8
  Patent Applications: 1
• 228 HAVING FORCED RECIRCULATION 
  Patents: 61
  Patent Applications: 15
• 229 Including automatic control means 
  Patents: 131
  Patent Applications: 25
• 230 Forced recirculation alone 
  Patents: 82
  Patent Applications: 16
• 231 Having recirculating duct connecting upper and lower room air strata 
  Patents: 35
  Patent Applications: 2
• 232 Having plural or branched recirculation ducts 
  Patents: 20
  Patent Applications: 3
• 233 For use with heating or cooling means 
  Patents: 119
  Patent Applications: 12
• 234 Including unitary housing having both inlet and outlet airways 
  Patents: 36
  Patent Applications: 11
• 235 Having air pump means for both airways 
  Patents: 15
  Patent Applications: 3
• 236 For use with heating and cooling means 
  Patents: 142
  Patent Applications: 7
• 237 HAVING BOTH INLET AND OUTLET AIRWAYS 
  Patents: 50
  Patent Applications: 76
• 238 Pressure regulation 
  Patents: 105
  Patent Applications: 24
• 239 Including automatic control means 
  Patents: 83
  Patent Applications: 67
• 240 With wind-operated air pump 
  Patents: 3
  Patent Applications: 0
• 241 Including unitary inlet and outlet housing 
  Patents: 16
  Patent Applications: 13
• 242 Rooftop 
  Patents: 11
  Patent Applications: 7
• 243 Sleeved vent for ceiling, wall, or floor (e.g., thimble) 
  Patents: 6
  Patent Applications: 0
• 244 With air pump means for both inlet and outlet airways 
  Patents: 13
  Patent Applications: 2
• 245 Air distributor with return vent (e.g., register, etc.) 
  Patents: 19
  Patent Applications: 1
• 246 Baseboard type 
  Patents: 4
  Patent Applications: 1
• 247 Floor type 
  Patents: 5
  Patent Applications: 1
• 248 Ceiling type 
  Patents: 21
  Patent Applications: 2
• 249 With air pump 
  Patents: 13
  Patent Applications: 5
• 250 Natural ventilation including air passage through rooftop (i.e., no air pump) 
  Patents: 45
  Patent Applications: 8
• 251 With air pump means 
  Patents: 83
  Patent Applications: 59
• 252 For both inlet and outlet airways 
  Patents: 67
  Patent Applications: 20
• 253 For outlet airway 
  Patents: 44
  Patent Applications: 9
• 254 HAVING INLET AIRWAY 
  Patents: 33
  Patent Applications: 41
• 255 Pressure regulation 
  Patents: 58
  Patent Applications: 9
• 256 Including automatic control means 
  Patents: 172
  Patent Applications: 64
• 257 Emergency smoke or fire responsive valve 
  Patents: 31
  Patent Applications: 4
• 258 Air temperature responsive 
  Patents: 100
  Patent Applications: 28
• 259 Including backdraft preventer 
  Patents: 56
  Patent Applications: 10
• 260 Through roof eaves or rafters 
  Patents: 81
  Patent Applications: 6
• 261 Including structure for mixing plural air streams together 
  Patents: 34
  Patent Applications: 12
• 262 And having specific noise inhibiting structure 
  Patents: 19
  Patent Applications: 6
• 263 With shaped nozzle 
  Patents: 18
  Patent Applications: 0
• 264 And readily movable air regulating louver, damper, or cover 
  Patents: 20
  Patent Applications: 2
• 265 With readily movable air regulating louver, damper, or cover 
  Patents: 22
  Patent Applications: 2
• 266 Pivoted 
  Patents: 13
  Patent Applications: 1
• 267 Plural 
  Patents: 21
  Patent Applications: 1
• 268 Including parrallel louver vanes 
  Patents: 8
  Patent Applications: 0
• 269 With air pump 
  Patents: 35
  Patent Applications: 1
• 270 Sleeved vent for ceiling, wall, or floor (e.g., thimble) 
  Patents: 32
  Patent Applications: 9
• 271 Wall type 
  Patents: 32
  Patent Applications: 9
• 272 With air pump 
  Patents: 4
  Patent Applications: 0
• 273 Having adjustable valve 
  Patents: 22
  Patent Applications: 1
• 274 Sliding or axially moveable 
  Patents: 18
  Patent Applications: 2
• 275 Including specific cover or shield for exterior vent opening 
  Patents: 45
  Patent Applications: 22
• 276 Wall type 
  Patents: 38
  Patent Applications: 10
• 277 Louver 
  Patents: 55
  Patent Applications: 5
• 278 Having moveable vanes 
  Patents: 11
  Patent Applications: 1
• 279 Having serially aligned vane sets 
  Patents: 8
  Patent Applications: 0
• 280 Formed in sheet member 
  Patents: 8
  Patent Applications: 0
• 281 Having specific vane supporting means 
  Patents: 6
  Patent Applications: 0
• 282 In between vane ends 
  Patents: 3
  Patent Applications: 0
• 283 With screen mounting means 
  Patents: 19
  Patent Applications: 3
• 284 Including specific air distributor (e.g., register, etc.) 
  Patents: 83
  Patent Applications: 45
• 285 Sweeping type 
  Patents: 63
  Patent Applications: 5
• 286 Having airway joint with ball or cylinder rotatable in a socket 
  Patents: 38
  Patent Applications: 1
• 287 Baseboard type 
  Patents: 13
  Patent Applications: 0
• 288 Including portion or element movable during normal use 
  Patents: 3
  Patent Applications: 0
• 289 Floor type 
  Patents: 55
  Patent Applications: 9
• 290 Having adjustable valve 
  Patents: 84
  Patent Applications: 19
• 291 With means for liquid contact 
  Patents: 13
  Patent Applications: 0
• 292 Ceiling type 
  Patents: 85
  Patent Applications: 20
• 293 With light fixture 
  Patents: 22
  Patent Applications: 5
• 294 Air passes over lamp 
  Patents: 15
  Patent Applications: 0
• 295 Having adjustable valve 
  Patents: 11
  Patent Applications: 0
• 296 Including perforated or porous element 
  Patents: 75
  Patent Applications: 5
• 297 Having portion or element movable during normal use 
  Patents: 31
  Patent Applications: 1
• 298 Axially movable or sliding valve 
  Patents: 26
  Patent Applications: 3
• 299 Including plural vanes 
  Patents: 43
  Patent Applications: 5
• 300 Concentric 
  Patents: 35
  Patent Applications: 4
• 301 Including elongated output slot 
  Patents: 28
  Patent Applications: 0
• 302 Single, annular output slot 
  Patents: 25
  Patent Applications: 2
• 303 Having portion or element movable during normal use 
  Patents: 36
  Patent Applications: 4
• 304 Pivoted 
  Patents: 27
  Patent Applications: 1
• 305 Air nozzle 
  Patents: 51
  Patent Applications: 2
• 306 Having air duct extending into room 
  Patents: 114
  Patent Applications: 9
• 307 Having air deflecting wall extending into room 
  Patents: 26
  Patent Applications: 2
• 308 Having vanes or elongated output slots extending radially 
  Patents: 9
  Patent Applications: 1
• 309 Louvered air distributor 
  Patents: 42
  Patent Applications: 12
• 310 Concentric 
  Patents: 11
  Patent Applications: 3
• 311 Having separate, adjustable internal damper 
  Patents: 8
  Patent Applications: 0
• 312 Having adjustable vane 
  Patents: 7
  Patent Applications: 0
• 313 Moveable 
  Patents: 71
  Patent Applications: 3
• 314 Aligned mutiple, movable sets of vanes 
  Patents: 14
  Patent Applications: 2
• 315 Serially arranged sets 
  Patents: 67
  Patent Applications: 3
• 316 Repositionable set 
  Patents: 44
  Patent Applications: 1
• 317 Rotating disks 
  Patents: 8
  Patent Applications: 3
• 318 Louver vanes form valve 
  Patents: 31
  Patent Applications: 0
• 319 Plural vanes pivoting about individual axes 
  Patents: 67
  Patent Applications: 4
• 320 Pivot at leading or trailing vane edge 
  Patents: 37
  Patent Applications: 2
• 321 In housing within room 
  Patents: 13
  Patent Applications: 0
• 322 With adjustable valve 
  Patents: 38
  Patent Applications: 8
• 323 Axially movable 
  Patents: 17
  Patent Applications: 1
• 324 Sliding 
  Patents: 54
  Patent Applications: 3
• 325 Plural blades pivoting along parrallel axes 
  Patents: 23
  Patent Applications: 5
• 326 Adjacent blades pivot in opposing directions 
  Patents: 11
  Patent Applications: 0
• 327 Valve opens by pivoting in upstream direction 
  Patents: 5
  Patent Applications: 1
• 328 With means for liquid contact 
  Patents: 21
  Patent Applications: 1
• 329 With air pump 
  Patents: 30
  Patent Applications: 13
• 330 Having register box, frame, or grating 
  Patents: 32
  Patent Applications: 10
• 331 Including specific grating or grating mounting structure 
  Patents: 26
  Patent Applications: 2
• 332 Readily moveable grating 
  Patents: 17
  Patent Applications: 0
• 333 With adjustable valve (e.g., damper, etc.) 
  Patents: 100
  Patent Applications: 48
• 334 Axially movable or sliding 
  Patents: 58
  Patent Applications: 7
• 335 Plural blades pivoting along parallel axes 
  Patents: 55
  Patent Applications: 4
• 336 Adjacent blades pivot in opposing directions 
  Patents: 14
  Patent Applications: 1
• 337 With means for liquid contact 
  Patents: 47
  Patent Applications: 6
• 338 With air pump 
  Patents: 128
  Patent Applications: 71
• 339 HAVING OUTLET AIRWAY 
  Patents: 45
  Patent Applications: 44
• 340 Pressure regulation 
  Patents: 23
  Patent Applications: 5
• 341 With air pump 
  Patents: 76
  Patent Applications: 34
• 342 And having specific emergency smoke handling structure 
  Patents: 50
  Patent Applications: 3
• 343 Having specific air pump actuator 
  Patents: 69
  Patent Applications: 10
• 344 Pump induces draft in exit duct 
  Patents: 34
  Patent Applications: 2
• 345 Having plural suction intakes 
  Patents: 31
  Patent Applications: 0
• 346 Having vibration absorbing or preventing structure 
  Patents: 16
  Patent Applications: 1
• 347 Having readily movable air regulating louver,damper, or cover 
  Patents: 25
  Patent Applications: 4
• 348 Continuously horizontal damper panel 
  Patents: 7
  Patent Applications: 0
• 349 Ceiling mounted air pump 
  Patents: 25
  Patent Applications: 6
• 350 Wall mounted air pump 
  Patents: 7
  Patent Applications: 1
• 351 Plural damper panel 
  Patents: 18
  Patent Applications: 0
• 352 Plural damper panel 
  Patents: 10
  Patent Applications: 0
• 353 Including backdraft preventer 
  Patents: 61
  Patent Applications: 8
• 354 Ceiling or wall mounted 
  Patents: 70
  Patent Applications: 15
• 355 With movable access cover 
  Patents: 9
  Patent Applications: 0
• 356 Having exterior neck with enlarged, weather resistant cover 
  Patents: 17
  Patent Applications: 3
• 357 Having emergency smoke handling feature 
  Patents: 31
  Patent Applications: 3
• 358 Having readliy movable air regulating louver, damper, or cover 
  Patents: 55
  Patent Applications: 38
• 359 Including backdraft preventer 
  Patents: 83
  Patent Applications: 13
• 360 Including counter balancing means 
  Patents: 11
  Patent Applications: 0
• 361 Internal damper 
  Patents: 10
  Patent Applications: 1
• 362 Continuously horizontal damper panel 
  Patents: 6
  Patent Applications: 1
• 363 Pivoted damper panel 
  Patents: 23
  Patent Applications: 2
• 364 Along roof ridge 
  Patents: 39
  Patent Applications: 1
• 365 Along roof ridge 
  Patents: 207
  Patent Applications: 69
• 366 Slant roof ventilator 
  Patents: 78
  Patent Applications: 16
• 367 Having specific cover or shield for exterior vent opening 
  Patents: 82
  Patent Applications: 32
• 368 Exterior neck with enlarged, weather resistant cover 
  Patents: 49
  Patent Applications: 0
• 369 FIRE DAMPER 
  Patents: 104
  Patent Applications: 12
• 370 MISCELLANEOUS 
  Patents: 85
  Patent Applications: 12
• 900 VENTILATOR USING SOLAR POWER 
  Patents: 58
  Patent Applications: 2
• 901 FOG DISPELLER 
  Patents: 2
  Patent Applications: 0
• 902 AIR RAID SHELTER VENTILATION 
  Patents: 17
  Patent Applications: 0
• 903 FLEXIBLE DUCTS USED FOR CARRYING AIR 
  Patents: 57
  Patent Applications: 1
• 904 MAGNETIC MEANS TO HOLD A DAMPER CLOSED 
  Patents: 6
  Patent Applications: 0
• 905 BLACK OUT MEANS 
  Patents: 6
  Patent Applications: 0
• 906 NOISE INHIBITING MEANS 
  Patents: 96
  Patent Applications: 6
• 907 SEAT 
  Patents: 27
  Patent Applications: 0
• 908 HAVING ROTARY RETARDER 
  Patents: 0
  Patent Applications: 0
• 909 RADON PREVENTION 
  Patents: 46
  Patent Applications: 2