"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 6170801 | Valve closure system A valve closure system for rotating a rotatable actuator of a valve relative to a body of the valve to operate the valve from open to closed. The system contains a motor having a rotatable shaft, a mounting that comprises plural parts including a bracket,... | 01/09/2001 |
| 5749562 | Modular valve arrangement A modular valve arrangement, including: a plurality of individual values each having a passage therein with a longitudinal axis, and a fixing arrangement for joining the valves together into a joined condition in which the passages cooperate to form at le... | 05/12/1998 |