U.S. patent number D353,415 [Application Number D/007,366] was granted by the patent office on 1994-12-13 for double-sided puzzle. Invention is credited to Dennis E. Mitchell.
United States Patent | D353,415 |
Mitchell | December 13, 1994 |
Inventors: | Mitchell; Dennis E. (Mystic, CT) |
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Appl. No.: | D/007,366 |
Filed: | April 20, 1993 |
Current U.S. Class: | D21/480 |
Field of Search: | ;428/33 ;D21/104-107 |
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