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 |
| 7032330 | Grind rail apparatus A grind rail apparatus coupleable to an underside of a footwear for grinding is provided. The grind rail apparatus includes a body having an upper side and a lower side, the upper side of the body coupled to the underside of the footwear. The grind rail apparatus al... | 04/25/2006 |
| 6467198 | High flex grinding shoe Quick release grinding shoe device formed in its arch region with a fastener passage and a downwardly extending first locking element for complemental receipt of a quick release grinding plate formed its front extremity with a longitudinally projecting fa... | 10/22/2002 |
| 6374515 | Shoe having a floating insole A shoe having an expandable shoe upper includes an outsole having a rear outsole and a front outsole and an expandable insole with a rear insole and a front insole. The front insole is movable relative to a length of the rear insole as the shoe upper expa... | 04/23/2002 |
| 6195918 | Grinding apparatus with flexible plate Grind shoe device of the present invention includes a shoe sole having downwardly facing heel and forefoot tread surfaces and a downwardly opening recess formed with longitudinal and transverse recess sections. A grind plate device is formed with transver... | 03/06/2001 |
| 6115946 | Method for making footwear grinding apparatus A method of making a grinding shoe involving constructing a sole of high friction material having a downwardly facing high friction surface interrupted medially by an upwardly raised recess having opposite sides curved outwardly to form flares and making ... | 09/12/2000 |
| 6041525 | Footwear grinding apparatus with flanking bearing surfaces A grinding plate formed on its bottom side with a transverse downwardly facing grind surface disposed medially under the arch and configured on the medial side with a longitudinal medial runner having one radius of curvature and formed on the lateral side... | 03/28/2000 |
| 6006451 | Footwear apparatus with grinding plate and method of making same An article of athletic footwear with a sole incorporating low friction surfaces for sliding across a protruding feature on a supporting surface and walking surfaces for other athletic pursuits, and a method of making same.... | 12/28/1999 |
| 5546680 | Safety footwear A footwear product, such as a rubber boot, has protective plates disposed to prevent the penetration of sharp objects into a wearer's foot. A first rigid protective plate is embedded in the sole, and a second rigid protective plate is disposed to cover an... | 08/20/1996 |
| 4439937 | Integrally cast shoe sole containing stiffener member A shoe sole structure in which a metallic stiffener member having generally the form of an elongated plate is encapsulated within a solid body of elastomeric material. The elastomeric material provides a ground-engaging surface underneath the stiffener me... | 04/03/1984 |
