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 |
| 7293560 | Respirator mask with supplementary panels In a respirator mask in which the visor panels can be covered by light-absorbing supplementary panels, first and second snap-in hooks are molded onto opposite sides of the visor panel and a stop is molded onto a corner section to form a guide pocket. The outer conto... | 11/13/2007 |
| 7011093 | Microencapsulated fragrances and methods of coating microcapsules Nasal dilators and strips, methods of their manufacture, and methods for improving the breathing of individuals are provided. The strips and dilators include an elongated substrate, with or without a dilating component or portion, having top and bottom surfaces and ... | 03/14/2006 |
| 6973676 | Protective helmet with integral air supply Protective helmet device includes a helmet with a hard outer shell and a soft inner lining. In one embodiment, a tube inlet with multiple channels is coupled to the top of the outer shell, and is operative to allow the helmet to be connected to an air supply. In ano... | 12/13/2005 |
| 6915801 | Combination oxygen supplement and swimming snorkel apparatus A swimming snorkel and oxygen supplement apparatus that includes a mask and a headband strap to which is mounted a snorkel device, including a snorkel tube and a mouthpiece for inspiration of atmospheric air therethrough, and an oxygen supply system for communicatin... | 07/12/2005 |
| 6694971 | Face mask An apparatus for the protection of a face in general, and in particular the eyes, ears, nose, and respiratory system of a user includes a flexible material that is adapted to be disposed over a portion of the face. The flexible material includes a first e... | 02/24/2004 |
| 6644308 | Helmet A breathing mask is provided for a helmet which reduces the formation of water on the lens of the eyeglasses of the wearer or on the shield of the helmet. The helmet comprises a head portion, a shield portion, and a breathing mask. The shield portion comp... | 11/11/2003 |
| 5758639 | Combination of a helmet and a respiratror and a method for using it The invention relates to a combination of a helmet or a protective mask and a respirator that can function under ram pressure. The helmet's chin arch (1) contains a face element (4), a filter (3) and inhalation and exhalation valves (5,6). The air can, fo... | 06/02/1998 |
| 4817596 | Helmet for use with respirator mask A helmet comprises a rigid shell having right and left sides and formed therebetween with a forwardly open face cutout and therebelow with a downwardly open neck opening, a plurality of interconnected and flexible radius straps having right and left ends ... | 04/04/1989 |
| 4481560 | Safety lamp with noctilucent lens holder A lamp, particularly a miner's safety lamp, is provided with a noctilucent lens holder so that in the event of an accident causing non functioning of the normal light source of the lamp, the lens holder will provide luminous light.... | 11/06/1984 |
| 4427560 | Anti-oxidation and corrosion inhibitors for boron-containing lubricants Lubricating compositions containing an oxidation inhibitor, copper and lead corrosion inhibitors and boron and/or metal-boron derivatives having extreme pressure, anti-wear and friction reducing properties are disclosed.... | 01/24/1984 |
