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...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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Class 172/499 - Spring means alternately biases tool in opposite directions


Subclass of Class 172 - Earth working
Definition: Apparatus in which the resilient means is active to press
No. of patents: 1
Last issue date: 11/24/1992


NumberTitleIssue Date
5165486Implement lock-up system with shock-absorbing cushion springs
An automatic implement lock-up system with shock absorbing cushion springs for releasably raising and lowering implements mounted to a vehicle. An implement is pivotally attached to a vehicle mounting bracket via an implement support arm. A lock-up bracke...
11/24/1992
 
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