U.S. patent number D403,681 [Application Number D/084,034] was granted by the patent office on 1999-01-05 for headphone. Invention is credited to Calvin Lam.
United States Patent | D403,681 |
Lam | January 5, 1999 |
Inventors: | Lam; Calvin (City of Industry, CA) |
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Appl. No.: | D/084,034 |
Filed: | February 23, 1998 |
Current U.S. Class: | D14/223; D14/206 |
Current International Class: | 1401 |
Field of Search: | ;D14/137,138,140,142,147,148,205,206,223,249 ;181/129,135 ;379/430,433 ;381/183,187,188 |
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