Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7311329 | Anti-tip wheel for a wheelchair A wheelchair is provided with front anti-tip wheels adapted to assist the wheelchair in mounting an obstacle that the wheelchair approaches obliquely. The anti-tip wheels may function as casters, capable of rotating about a vertical axis, or may be fixed for rotatio... | 12/25/2007 |
| 7137896 | Multi-roller ball for constant velocity joints A constant velocity joint includes an outer joint member, an inner joint member, torque transmitting ball assemblies guided in pairs of tracks, and a cage having windows for receiving the ball assemblies and cage webs defined between the windows. Each ball assembly ... | 11/21/2006 |
