"The Americans have need of the telephone, but we do not. We have plenty of messenger boys."
Sir William Preece, chief engineer, British Post Office ; 1878
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| Number | Title | Issue Date |
| 4653421 | Skimming and utility vessel that effects surface sea control An oil skimming and utility vessel for operation in significant seas which functions to calm wave action for further oil contaminant separation operations or other marine utility operations. The vessel is a barge having forward tank compartmentation with ... | 03/31/1987 |
| 4600975 | Architectural lighting apparatus An indirect lighting assembly consisting of a housing structure and low voltage light tubing for retention therein, said housing structure being a unitarily extruded body having an anchor tab portion extending perpendicularly into a spacer portion and ter... | 07/15/1986 |
| 4580827 | Pick-up bed forward compartmentation Apparatus for use in combination with a straddle-bed tool box to provide large volume secured storage in a pick-up truck. The apparatus consists of opposite side angle brackets secured to bed side rails to provide rotary support for a closure panel that e... | 04/08/1986 |
| 4566242 | Smoke and heat barrier A heat insulative barrier for use in isolating potential fire zones relative to expansion joint voids which comprises the use of a sealed sheet of ceramic felt material secured across an expansion void and including one or more refractory cloth sheets sea... | 01/28/1986 |
| 4564465 | Corrosion inhibition additive for fluid conditioning A method and composition for corrosion protection of metal components of a fluid circulation system utilizing a buffered solution containing perchlorate ion and specific operative additives.... | 01/14/1986 |
| 4557082 | Wide extension expansion joint assembly Apparatus for covering relatively wider building structure expansion voids which includes a cover panel, base member extrusions for opposite side support and a lazy tong centering assembly for both supportive attachment to the cover panel and maintaining ... | 12/10/1985 |
| 4553698 | Pneumatic pesticide duster for treatment of structures A pneumatic pesticide duster for use in the application of pesticide dusts in structures. The apparatus comprises a dust reservoir, compressed air source, manually operated control valve and metallic discharge tube having an opening ranging in size up to ... | 11/19/1985 |
| 4541064 | Process for ultrasonic testing of tubular goods A method for ultrasonic flaw inspection of non-rotating tubular goods using microprocessor central control. The system includes a test head with circumferential arrays of transducers oriented for inspection for each of transverse, longitudinal and wall th... | 09/10/1985 |
| 4539645 | Automated sample analyzer for induction furnace analysis An automated sample analyzer for induction furnace analysis includes an induction furnace having an induction coil housing with an induction coil therein. The coil housing has a lower opening through which a crucible with a sample can be moved to allow th... | 09/03/1985 |
| 4487072 | Ultrasonic testing of tubular goods Method and apparatus for ultrasonic flaw inspection of non-rotating tubular goods. The apparatus includes a test head with circumferential arrays of transducers oriented for inspection for each of transverse, longitudinal and wall thickness defects, and t... | 12/11/1984 |
| 4475399 | Apparatus for ultrasonic testing of tubular goods Apparatus for ultrasonic flaw inspection of non-rotating tubular goods. The apparatus includes a test head with circumferential arrays of transducers oriented for inspection for each of transverse, longitudinal and wall thickness defects, and the test hea... | 10/09/1984 |
| 4474002 | Hydraulic drive pump apparatus A hydraulic drive apparatus for a wellhead pump jack which utilizes oppositely driven single-acting hydraulic cylinders as actuated by a variable volume pump having flow direction and flow volume controlled by a servo linkage and control lever. The linkag... | 10/02/1984 |
| 4450499 | Flare ignition system A flare ignition system for oil well flaring of combustible gases which includes a central control unit, low voltage interconnect line and plural remote igniter units which include alternate first and second spark gaps coordinated in fail-safe operation. ... | 05/22/1984 |
| 4449849 | Method of removing water from earthen pits A method of removing water from earthen pits such as the earthen pits commonly used in the drilling of oil and gas wells for containing reserve drilling fluid is provided. By the method, a plurality of spray nozzles are placed around the periphery of the ... | 05/22/1984 |
| 4432518 | Eaves trough bracket assembly A dually adjustable eaves trough bracket for installation of eaves trough at varying angles to roof rafter and eaves board structure. The bracket including a securing plate adapted for vertical orientation to the roof eave structure and including a plural... | 02/21/1984 |
| 4413158 | Automatic call forwarding telephone apparatus Telephone apparatus for installation at a subscriber station to enable call forward operation as used in combination with the standard subscriber facilities. The unit includes ring detection and call forward programming circuitry. The call forward program... | 11/01/1983 |
| 4406372 | Display tray A display tray for ring jewelry wherein a plurality of parallel bars each having normally extending ring posts are selectively positionable to enable captive retention of rings placed on the ring posts as the free post ends are locked in abutment to a nex... | 09/27/1983 |
| 4379440 | Livestock spray apparatus An improved portable livestock spraying apparatus which includes a chute structure and adjustable guidance structure for directing different sizes of animals through the chute in the presence of surrounding spray coverage of selected medicinal solution. T... | 04/12/1983 |
| 4360885 | Micro-optical tomography Micro-optical tomography is a technique for more fully utilizing the information conveyed by light in microscopy. This is accomplished with an objective lens imaging on a two-dimensional sensor, by scanning a parameter affecting the phase and amplitude of... | 11/23/1982 |
| 4348907 | Retirement elongation indicator for mast raising lines Apparatus for permanent affixure to a drilling mast raising line for indicating the condition of the mast raising line at selected intervals. Monitor sleeves are swaged to the mast raising line at a specified separation distance X when the line is new, an... | 09/14/1982 |
| 4344580 | Fibrous material apparatus A device for dispensing loose, fibrous material comprising a housing having a reservoir disposed therein for containing the loose fibrous material to be dispensed. The housing has a passageway which extends from the reservoir through which the material is... | 08/17/1982 |
| 4335410 | Thin film magnetic transducer A method for formation of thin film inductive magnetic transducers wherein a minimum number of basic photomasks are utilized for deposition of successive thin film winding layers, and wherein all odd-to-even inter-film electrical contact points are dispos... | 06/15/1982 |
| 4329754 | Cylinder maintenance tool An apparatus for clearing and cleaning of engine cylinder exhaust ports wherein access is gained through the spark plug receiving bore. The apparatus consists of a unitary cleaning tool having a handle end and a bent tool end extending at approximately 90... | 05/18/1982 |
| 4329543 | Communication system A communication system for combining telephone service with hands-free talk-back intercom service is disclosed. The telephone service includes a telephone exchange network having an outside trunk, an internal trunk, and a device for switching the telephon... | 05/11/1982 |
| 4325564 | Bicycle trailer A bicycle trailer having reduced transverse profile and horizontal frame work with load carriage concentrated over the trailer wheel. The device utilizes a horizontal frame work as fork-supported above a standard bicycle wheel and having a tongue assembly... | 04/20/1982 |
| 4318255 | Modular interior storm window and heat trap A window insulation device is disclosed for interior installation. The device comprises at least two tubular sections, and at least one male and one female section. The male and female sections are adjustably fitted for tight reception between the window ... | 03/09/1982 |
| 4317969 | Electrical line-connector An electrical line-connector device for safety application. The electrical contacts of the two-part line-connector which connect electrical conductors with one another are flush contacts, which come into contact when the connecting parts are brought toget... | 03/02/1982 |
| 4308427 | Hands-free talk-back intercommunication system A hands-free talk-back two-way intercommunication system is disclosed. The system includes a plurality of local stations connected to a main distribution station. Also connected to the main distribution station may be a direct station selector. At least o... | 12/29/1981 |
| 4302032 | Clip-on ledger book identifier A clip-on identifier is provided for a loose-leaf ledger book of the type having a front binder bar with a front cover pivotally attached thereto. The clip-on identifier is formed from a transparent material and includes a middle portion extending across ... | 11/24/1981 |
| 4296664 | Sound broadcasting apparatus An apparatus for reproducing sound from data which are electrically stored in an electronic memory is disclosed. This sound reproducing apparatus includes a member for providing timing control to associated electronic circuitry. There is also a member for... | 10/27/1981 |
| 4295801 | Fluid-powered submersible sampling pump A small diameter fluid-driven pump for subterranean fluid sampling, and including an elongated cylindrical body formed by a centrally disposed control valve block assembly and a pair of hollow motor piston chambers on opposite sides of the valve block and... | 10/20/1981 |
| 4295708 | Electro-mechanically rotatable mirror Disclosed is an apparatus for providing generally lateral or rearward vision at a plurality of selectable angles. This apparatus is electro-mechanically rotatable and may be remotely actuated. The apparatus includes a support member used to support the ap... | 10/20/1981 |
| 4283980 | Combination portable and stationary, bench-mounted chain saw apparatus Apparatus for sawing which can be used either in portable, manually operated form, or as a stationary bench-mounted sawing device for sawing through a workpiece along predetermined angles of cut. The apparatus comprises a portable chain saw which includes... | 08/18/1981 |
| 4281357 | Thin film magnetic head and method of making the same A thin film magnetic head is disclosed which includes a substrate, a first layer of magnetic material having a first offset portion, a second layer of magnetic material having a second offset portion overlying the first offset portion, and a layer of cond... | 07/28/1981 |
| 4280232 | Intraocular lens device An artificial intraocular lens device which utilizes a distendable, resilient superior loop and affixure to form a lobular positioning structure for implantation. The lens includes a superior haptic rim and large superior loop that may be secured to the h... | 07/28/1981 |
| 4274468 | Triple-sash double-hung storm window A triple-sash double-hung storm window assembly which includes a flanged, multiple channeled extrusion of generally rectangular overall configuration. The primary window or first sash of the assembly is the conventional double-hung window built into the h... | 06/23/1981 |
| 4274777 | Subterranean well pipe guiding apparatus An improved pipe guiding apparatus for vertically aligning pipe section joints in a derrick having a worktable and an elevator for vertically suspending at least one pipe section above the worktable. The apparatus is comprised of a rotary axle for horizon... | 06/23/1981 |
| 4271880 | Multiple purpose woodworking apparatus An improved universal shaper assembly adapted to rotate various forms of shaper cutters about a vertical axis and, alternately, about a horizontal axis. the assembly is provided with a vertically adjustable horizontal workpiece supporting table for use in... | 06/09/1981 |
| 4260450 | Method of fabrication for thin film magnetic transducers A method for formation of thin film inductive magnetic transducers wherein a minimum number of basic photomasks are utilized for deposition of successive thin film winding layers, and wherein all odd-to-even inter-film electrical contact points are dispos... | 04/07/1981 |
| 4250499 | Sound level detector with program interrupt A sound receiver outputs a signal to a sound level detector and to a notification signal generator. The sound level detector outputs a signal to a first input of a switch, and the notification signal generator outputs a signal to a second input of the swi... | 02/10/1981 |