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 |
| 4959972 | Wide range refrigeration system with suction gas cooling A refrigerant-compression temperature regulation system providing for suction gas cooling includes: (a) a compressor for compressing the refrigerant in vapor and gaseous phase; (b) a condenser downstream from the compressor for condensing the compressed r... | 10/02/1990 |
| 4934155 | Refrigeration system A vapor-compression refrigeration system has a continuously operating compressor, with loading on the compressor varied in accordance with conditions and cooling needs. The system avoids any on/off cycling of the compressor or valves in the system, but in... | 06/19/1990 |
| 4742689 | Constant temperature maintaining refrigeration system using proportional flow throttling valve and controlled bypass loop A vapor-compression refrigeration system has a continuously operating compressor, with loading on the compressor varied in accordance with conditions and cooling needs. The system avoids any on/off cycling of the compressor or valves in the system, but in... | 05/10/1988 |
| 4637454 | Wide range temperature control system for fluids A wide range temperature control system for controlling and maintaining the temperature of a first cooling liquid in an indirect heat exchanger at a predetermined setpoint within a wide range of temperatures is disclosed. The system proportions flow of a ... | 01/20/1987 |
