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 |
| 6827820 | Degassing centrifugal apparatus, process for pumping and degassing a fluid and process for producing paper or board The invention relates to a degassing centrifugal apparatus such as a pump and to a process for pumping and degassing a fluid. The apparatus has a rotatable hollow rotor connected to a stationary fluid inlet at one end and a stationary liquid outlet at the opposite e... | 12/07/2004 |
| 6481499 | Well-bottom gas separator This is a high-efficiency item of equipment, for example for a well bottom for separating out gas from a liquid/gas mixture, based on the effects of flows of the cascade and segregated types. It consists basically of a sedimentation vessel whose lateral s... | 11/19/2002 |
| 6471756 | Bubble-removing apparatus A bubble-removing apparatus has a main body having a central axis, a main chamber, an inflow port for introducing a fluid containing entrained bubbles tangentially into the main chamber so that the fluid is caused to rotate in the main chamber about the c... | 10/29/2002 |
| 6296690 | Compression-pumping system comprising an alternating compression section and its process An alternating compression-pumping system includes at least one alternating compression-pumping section, suited to impart a pressure value to an essentially liquid fluid or to an essentially gaseous fluid, at least one pumping section suited for an essent... | 10/02/2001 |
| 6117217 | Agricultural liquid ammonia pump-vapor stripper A liquid ammonia pump-vapor stripper unit is disclosed having an impeller pump assembly which increases the system pressure before it is delivered to a receiver-accumulator where the ammonia vapor mass formed along its path from the storage tank is separa... | 09/12/2000 |
| 6090299 | Three-phase rotary separator The method of operating rotating separator apparatus, to which fluid, including gas and liquids is supplied in a fluid jet via a nozzle, which includes separating the liquids from the gas in the stream, at a first zone within the rotating apparatus, and s... | 07/18/2000 |
| 5961700 | Filter system for removal of gas and particulates from cellular fluids A gas elimination system includes a gas elimination device and a priming system. The gas elimination device includes a vortex chamber that forms a vortex in the fluid flowing into the chamber and a particulate filter that removes particles from the fluid.... | 10/05/1999 |
| 5308386 | Air relief valve for a pressure vessel The present invention is directed towards an air relief valve for a pressure vessel which automatically releases air from the system during filling with liquid, and which automatically seals when the liquid in the system reaches a predetermined level to p... | 05/03/1994 |
| 5002592 | Waste tank for a vacuum sewage system A waste tank for a vacuum sewage system installed in a transport vehicle comprises a receptacle portion for receiving sewage up to a predetermined maximum filling level. The tank defines an inlet opening for admitting air and sewage to the tank and an out... | 03/26/1991 |
| 4536201 | System for venting gases in fluids passing through a conduit An apparatus as disclosed for the venting of gases contained in fluids passing through a primary conduit in connection with medical treatments comprising throttling means interposed in the primary conduit, pump means downstream of the throttling means for... | 08/20/1985 |
| 4353719 | Drilling fluid gas and solids removal system Disclosed is a drilling fluid gas and solids removal system. The system includes a pedestal with a solids collection tub rotatably mounted thereon. A pressure vessel is supported by the pedestal above the solids collection tub. The pressure vessel include... | 10/12/1982 |