Thomas Edison obtained a patent for an electrographic vote recorder.
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| Number | Title | Issue Date |
| 7021325 | Valve assembly and method for hot tapping a line A valve assembly includes a valve body with an access opening in which a linearly installed but pivotally operated gate-like valve-stopping mechanism is disposed, said mechanism including a support structure or cartridge with a pivotally moveable valve-stopping elem... | 04/04/2006 |
| 6918573 | Microvalve A high pressure microvalve for connecting a first fluid-bearing conduit to a second fluid-bearing conduit is provided. The microvalve includes (a) a first body having a first interior surface and at least one port outlet at the first interior surface that is in flui... | 07/19/2005 |
| 6619565 | Irrigation system An irrigation system for selectively providing water to various plants in a relative same area with different rates of application of water. The system has a first valve for connecting a water supply with a tube in a edging. The edging has vertical web wi... | 09/16/2003 |
| 5690136 | Device for rapid connecting-up of pressurized containers in drinks dispenser plants A drink dispenser includes a body of a head of the device having a cavity that defines a three-way passageway, the cavity containing a tubular element which is slidably movable along an axial direction of the tubular element between a first and second end... | 11/25/1997 |
| 5385060 | Device for the assembly or disassembly of probes in process pipes, tanks, etc. A retrieving device for the assembly and disassembly of probes into process pipes and tanks comprising a hydraulically activated cylinder attached to a nipple and ball valve mounted on the wall of a pipe or tank and the cylinder may be operated by applyin... | 01/31/1995 |
| 4234006 | Method of forming an opening in the outer enclosure of a gas-insulated electrical apparatus Electrical apparatus includes an outer enclosure, an electrode within the enclosure, and an insulating gas electrically insulating the electrode from the enclosure. A support plate is secured to the outer enclosure, and the support plate has an opening th... | 11/18/1980 |
| 4126133 | Intracorporeal catheter improvement There is provided a catheter having a hub portion in which a rotatable intravenous receiving member is mounted. In one position the rotatable member provides a passageway for a needle passable through the rotating portion and the hub end and extending por... | 11/21/1978 |
| 4108194 | Method and apparatus for a tapered pipeline seal A method and apparatus for a tapered pipeline seal includes a means for enabling a line to be sealed with a rotatable tapered sealing plug or apparatus.... | 08/22/1978 |
| 4096754 | Removable probe A removably mounted probe provides access to a fluid enclosure. The front end of the probe has a collar which seats on a beveled shoulder to position the probe relative to the fluid enclosure. The back end of the probe extends through a ball valve and a p... | 06/27/1978 |
| 4082206 | Cap assembly for aqueous ammonia container A cap assembly is provided for use with a container for storing and supplying aqueous ammonia to a diazo type copying machine. The cap assembly comprises a closure member mounted on the container and a key device associated with free ends of an ammonia fe... | 04/04/1978 |
| 3983756 | Probe apparatus for a high pressure chamber Disclosed is an apparatus including a probe adapted for removal through an aperture in the side wall of a high pressure chamber. The probe is supported at one end of a rod that is coaxially received within a sleeve. A plate at the free end of the rod form... | 10/05/1976 |