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 |
| 4180141 | Distributor for gas turbine silencers Gas turbine exhaust quieting means wherein the low frequency noise which is normally generated by turbulence in the gas turbine exhaust, is suppressed by means of a turbulence suppressing flow distributor. Said flow distributor comprising an elongated, ho... | 12/25/1979 |
| 4164989 | Muffler, especially for portable internal combustion engine A muffler, especially for a portable internal combustion engine, particularly for driving a motor chain saw, which muffler comprises an exhaust gas receiving chamber which is defined by a chamber wall and by a pan-shaped housing wall including an inlet fo... | 08/21/1979 |
| 4142606 | Exhaust gas diffuser A system for diffusing exhaust gases and controlling and suppressing backfire in an industrial truck is disclosed. Exhaust gases from the truck engine are first passed through a spark arresting muffler to remove hot, solid particles from the gas stream. T... | 03/06/1979 |
| 4140204 | Two-tube muffler and method of manufacture There is disclosed a muffler for an internal combustion engine, particularly an automobile engine, which includes a heavy steel outer casing formed from a section of cylindrical tubing together with an internal baffle structure of two sections of smaller ... | 02/20/1979 |
| 4113051 | Engine muffler and spark arrester A muffler and spark arrester for use on an internal combustion engine has an outer tube extending along an axis between an inlet and an outlet. A perforate inner tube is disposed coaxially within the outer tube and merges therewith adjacent the inlet and ... | 09/12/1978 |
| 4111279 | Louver flow muffler A muffler for lowering the exhaust gas noise level of combustion engines has a Helmholtz resonator chamber and a single straight tube member that is provided with a perforated portion outside said chamber large enough for full flow through it of all gas f... | 09/05/1978 |
| 4109749 | Muffler A noise attenuator or muffler for a compressed air tube type heater is disclosed. The muffler exhaust air through exit apertures located about its periphery and due to its unique design substantially avoids the formation of ice in the muffler.... | 08/29/1978 |
| 4105089 | Flow distributor for gas turbine silencers Gas turbine exhaust quieting means wherein the low frequency noise which is normally generated by turbulence in the gas turbine exhaust, is suppressed by means of a turbulence suppressing flow distributor. Said flow distributor comprising an elongated, ho... | 08/08/1978 |
| 3957132 | Snowmobile muffler An improved muffler for snowmobiles having multiple stages including at least one radial tubular attenuator comprising one or more flat, two-part casings, the parts being peripherally identical and configured to jointly form a plurality of passages, havin... | 05/18/1976 |
