The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Number | Title | Issue Date |
| 4667970 | Long-stroke high-force chuck Chuck provides for each jaw an action bar extending substantially longitudinally of the chuck axis and rockable in an action plane radiating from the chuck axis and intersecting the jaw, and a pair of first and second slides for each action bar, with said... | 05/26/1987 |
| 4623259 | Tide timer Tide timer providing a live imitation of the rising and falling water level during each tide, and affording an indication of the time to, and of the time of day or night of, the next high or low tide from observation of the water level on the timer alone,... | 11/18/1986 |
| 4583279 | Method of mounting automotive seat covers Anchor track for attachment thereto of a seat cover through intermediation of C-rings, with the anchor track having serrations for locking C-rings thereto, and being secured to bottoms of front and side channels of automotive front seat frame.... | 04/22/1986 |
| 4501024 | Bathing trunks Bathing trunks having substantially triangular front and rear panels joined at the corners, with said front panel being solid throughout, and said rear panel having two cut-outs leaving between them a band-like panel part of a width to cover the cleavage ... | 02/26/1985 |
| 4459887 | Rotary shear of variable cut lengths The drum drive in a rotary shear includes a pair of driving and driven surge gears and a coupling of which the driving and driven companion members are drivingly connected with the driven surge gear and with one of the drums. The shear is adjustable for v... | 07/17/1984 |
| 4455919 | Last shot bolt hold-open device Action disabling device in a firearm having among its conventional components a spring-closed breech bolt, a tubular magazine, and a pivoted cartridge lifter. The disabling device is in the form of an operating arm pivoted with one end to a fixed part of ... | 06/26/1984 |
| 4442562 | Method of forming anchor bolts The outer prongs and inner expander of an anchor bolt are formed from a cylindrical metal blank with an axis, by lengthwise cutting the blank in planes which subtend different parts of the blank periphery and are inclined inwardly toward one end of the bl... | 04/17/1984 |
| 4424977 | Wedge chuck Wedge chuck having grooves in the sides of each jaw and in the adjacent sides of its way in the chuck body, of which the grooves in all jaws form a given angle with a common plane normal to the chuck axis in which all jaws move, and the grooves in each wa... | 01/10/1984 |
| 4359810 | Method of forming cartridge chambers in firearm barrels Method of forming a cartridge chamber in the bore of a firearm barrel, which comprises driving into the bore of the barrel from the butt end thereof a mandrel of the surface configuration of the peripheral wall and mouth of the cartridge chamber, whereby ... | 11/23/1982 |
| 4353362 | Knee braces Knee brace of unfolding type has a wrap-on pad with quick-fasteners on opposite sides for initial pad application to a knee, and tapes for finish application of the pad to the knee, with the pad also having stays to lend it rigidity over part of its knee-... | 10/12/1982 |
| 4344559 | Signal devices for rural mailboxes Mailbox has a hinged front gate with a casing receiving a flag with lateral play for movement into raised and lowered positions to indicate "no mail" and "mail delivery", respectively. Provided on the flag and box are two ferromagnetic strips, respectivel... | 08/17/1982 |
| 4333604 | Economic energy control Controls for lights in a room with a swinging door for entry into and exit from the room, providing a main circuit for the lights, including a main switch normally closed to close the circuit, a time delay relay adapted, when energized, to hold the main s... | 06/08/1982 |
| 4309991 | Wrist brace A wrist brace having a wrist holder and an attached fastener strap, of which the holder is in the form of a flat sleeve for slip-on application to a wrist, with the sleeve having a thumb aperture and a length which is split to form a wrist-covering cuff.... | 01/12/1982 |
| 4296564 | Semi-automatic reloading firearm Semi-automatic reloading firearm is provided with a signal button which is normally urged into prominent projection from an aperture in the receiver to thereby foretell firing response of the firearm to the next pull on the trigger, and this signal button... | 10/27/1981 |
| 4249459 | Fluid coupling for a rotary chuck Journalled in a peripheral groove in an operationally turning chuck body is a non-turning fluid coupling ring of which opposite side faces confront opposite side walls of the groove. Leading from annular ports in the groove walls are fluid passages which ... | 02/10/1981 |
| 4239447 | Armored money-delivering vehicle An armored satellite truck is normally carried by an armored main truck and lowered onto the ground outside a bank establishment for delivering money and/or other valuables from the main truck to the interior of the establishment by an armed driver in the... | 12/16/1980 |
| 4221160 | Fluid operating mechanism for a rotary chuck Fluid operating mechanism providing stationary and rotary companion parts of a fluid coupling having in the rotary part a cylinder with a piston defining therein opposite chuck closing and opening cylinder ends, and ports in both coupling parts which, tog... | 09/09/1980 |
| 4183100 | Specialty glove Glove is open on one end and is provided in its other end and in one side with first and second apertures through which to project the fingers and the thumb, respectively, of a hand in slipping the glove onto the hand, with the glove also having a frictio... | 01/15/1980 |
| 4141358 | Ankle tape pack An ankle tape pack having a strap part for form-fitting wrap on the ankle and adjoining part of a foot, and tape parts attached to the strap part for winding on the foot over the applied strap part, with the strap part being formed of two plies of which a... | 02/27/1979 |
| 4131247 | Apparatus for reducing fragmentary stock A cylindrical working chamber in stock reducing apparatus features opposite ends which are open to the atmosphere so that a fan in the chamber outlet draws atmospheric air into the chamber through the open ends thereof, thence through stock in a turning a... | 12/26/1978 |
| 4130370 | Light-reflective road marker of self-cleaning type Road marker in a road bed having at the road level a resilient diaphragm carrying a light-reflective lens yieldingly projecting above the road level and operationally depressible below the road level by an automotive wheel passing over the lens, with the ... | 12/19/1978 |
| 4125436 | Slips for specimen growth and microscopic examination A flat transparent slip is formed with an integral handle part, including a prong that rises from the slip and has with the latter outside the confines of a growth area thereon a joint with a constriction for ready snap-off of the handle part from the sli... | 11/14/1978 |
| 4065200 | Mounting rack for circuit panels A cage with opposite endwalls and opposite tracks on the latter for circuit panels, of which each track is formed of a pair of resilient leaves arranged side-by-side and bowed toward each other to leave them with adjacent apices intermediate their lengths... | 12/27/1977 |
| 4061006 | Method of straightening firearm barrels To straighten firearm barrels with bores running out to muzzle ends, a barrel is bent at a transverse barrel plane at a distance of less than half the barrel length from the muzzle end to an extent and in a direction to bring the bore center axis at this ... | 12/06/1977 |
| 4054958 | Toilet of compost type Compost toilet having in the waste receptacle thereof a gate in the form of two hinged companion wings swingable into closed and open positions in and out of the path, respectively, of urine passed into the receptacle by a user of the toilet in standing p... | 10/25/1977 |
| 4038149 | Laboratory trays with lockable covers A laboratory tray with cup formations is on opposite sides of its upright circumferential wall provided with outwardly projecting pad formations with outer faces, with these pad formations registering with notches in a depending circumferential skirt on a... | 07/26/1977 |
| 4014124 | Safety marker for firearm A safety marker is attachable to a trigger guard on a firearm in apparent interference with accustomed manipulation of the trigger, with the marker resembling a shield which presents an abnormal and startling sight on the firearm, and by its apparent inte... | 03/29/1977 |
| 4009888 | Self-contained power chuck with centrifugally balanced jaws A chuck having radially movable jaws and axially extending jaw-operating levers pivotally mounted intermediate their ends to form shorter and longer arms, of which the shorter arms are operatively connected with the jaws, and the longer arms provide count... | 03/01/1977 |
| 4005965 | Record producing apparatus In record producing apparatus a biscuit mold is formed in upper and lower complemental cup parts with fragmental rims which, on lowering the upper cup part onto the lower cup part for closing the mold cavity to form a biscuit therein, complement each othe... | 02/01/1977 |
| 4004831 | Conduit connectors In a conduit connector, the tubular body has on one end spaced sections of an outer flange, and the applied cap has a peripheral wall over the one body end and an inner endshoulder opposite the flange sections on the body, while the locking gland is with ... | 01/25/1977 |
| 3962213 | Method of drying coated webs Method of drying on a web face an applied coating containing volatile products, involving feeding the web at a rate of at least 50 feet per minute past a station at which a flame sheet from a high-capacity burner is with its tip in contact with the coated... | 06/08/1976 |