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 |
| 6604562 | Tree pusher A tree pusher for safely felling trees. The tree pusher controls and determines the direction in which the tree falls, using a base, a frame, a detachable head which engages the tree trunk, and an extendable screw-type trailer jack that is repairable/repl... | 08/12/2003 |
| 6402121 | Apparatus for use in laying panels The device comprises fixation members to be fixed onto the batten, a rod selectively driven in translation with respect to the fixation members, parallely to the batten, a push member which is fixed onto one end of the rod, and driving members that are ri... | 06/11/2002 |
| 5314157 | Elongatable support A telescoping support has at its actuating head at which a roller engages a bar which emerges from the outer tube, a sleeve-like extension provided with a pawl which can engage the bar in a sleeve-locking manner under load to prevent spontaneous contracti... | 05/24/1994 |
