Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7341072 | Oxygen supply system having a central flow control unit The present invention is a centralized flow control unit (CFCU) for regulating oxygen flow in a multiple user emergency oxygen distribution system in passenger aircraft. Upon activation, the CFCU initially allows unregulated flow of oxygen to surge into the distribu... | 03/11/2008 |
| 5944257 | Bulb-operated modulating gas valve with minimum bypass A multi-way valve unit which provides low pressure unregulated gas flow and high pressure regulated gas flow in an integrated gas control system. A main and bypass diaphragm valves control gas flow through the gas valve system, the main and bypass valves ... | 08/31/1999 |
| 4406400 | Diaphragm operated pressure regulator A diaphragm operated pressure regulator having jointly operable principal and auxiliary springs, the auxiliary spring being readily exchangeable to vary the control characteristic of the regulator without affecting the maximum and minimum pressure adjustm... | 09/27/1983 |
