Did You Know...
...that Thomas Edison's patent application on his phonograph was approved by the Patent Office in just seven weeks? In contrast, it took Gordon Gould, the inventor of the laser, 30 years to obtain his patent -- finally awarded in 1988!
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| Number | Title | Issue Date |
| 7337800 | Automatic flushing system and method for a potable water station An automatic flushing system for a potable water station includes a conduit having a first end connected to a potable water supply source and a second end having a nozzle coupling. It also includes an air gap assembly having a coupling operable for coupling with the... | 03/04/2008 |
| 6581232 | Pool cleaning apparatus Apparatus for use with automatic pool cleaners includes a tube which defines a flow channel for water drawn pump from the pool through a house by a remote pump. The tube includes tubular sections (10A, 10B) joined by a joint (11) which operates to move on... | 06/24/2003 |
| 6053203 | Mechanically-driven pulsating flow valve for heat and mass transfer enhancement There are various methods for increasing heat transfer rates between a fluid jet (or array of jets) and an impingement surface. In a current investigation of pulsed flow impingement heat transfer, a pulsed jet with variable duty cycle impinging upon a hea... | 04/25/2000 |
| 4457339 | Multiprogrammable pinch valve module A pinch valve module comprising a housing, a cylindrical cavity formed in the housing, plural passageways leading from the cavity to the exterior of the housing and spaced about the cavity and a coaxial rotor rotatable within said cavity. The rotor has a ... | 07/03/1984 |
