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 |
| 8109731 | Radial fan impeller A radial fan impeller has the following features: a plurality of blades distributed around the periphery; viewed in the radial direction, the blades extend from an inner inlet region to an outer discharge region; the blades extend axially, viewed in the direction of... | 02/07/2012 |
| 7670104 | Fan with laminar flow element in front of the suction hole A radial fan (1) with a housing (2) and a fan impeller (3) disposed therein, an air inlet (4) and an air outlet (5) is provided, a pressure space (6) being formed between the latter, and in front of the air inlet (4) ... | 03/02/2010 |
| 7453696 | Cooling device for a radial fan driven by an electric motor with IC A radial fan includes an integrated circuit which is conductively connected to a printed circuit board to control a motor. The flow of air provided by a cooling impeller is conveyed directly to the integrated circuit to cool the integrated circuit during operation o... | 11/18/2008 |
| 7179050 | Radial fan The invention relates to a radial fan with a casing and in it an axially placed wheel, wherein the casing has an axially placed air inlet, an exhaust (5), a bottom section (6) with a bottom reference surface (7) arranged orthogonally to the axis... | 02/20/2007 |
