U.S. patent number D660,888 [Application Number D/408,142] was granted by the patent office on 2012-05-29 for grinding and polishing disc having extending fins which create an air cooling vortex. Invention is credited to Raffi Piliguian.
United States Patent | D660,888 |
Piliguian | May 29, 2012 |
Inventors: | Piliguian; Raffi (North Hollywood, CA) |
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Appl. No.: | D/408,142 |
Filed: | December 7, 2011 |
Current U.S. Class: | D15/126 |
Current International Class: | 1509 |
Field of Search: | ;D8/70 ;D15/126,138,139 ;83/589,663,676 ;451/548-551 |
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