U.S. patent number D587,678 [Application Number D/300,374] was granted by the patent office on 2009-03-03 for headphone. This patent grant is currently assigned to Sony Corporation. Invention is credited to Yasuo Yuyama.
United States Patent | D587,678 |
Yuyama | March 3, 2009 |
Inventors: | Yuyama; Yasuo (Tokyo, JP) |
---|---|
Assignee: | Sony Corporation (Tokyo,
JP) |
Appl. No.: | D/300,374 |
Filed: | March 20, 2008 |
Sep 28, 2007 [JP] | D2007-026504 | |||
Current U.S. Class: | D14/205 |
Current International Class: | 1401 |
Field of Search: | ;D14/188,192,249,205,206,223 ;181/129-130 ;379/430,433.01,433.05,420.01 ;381/370,376,377,378,380,381 ;455/344,351,569.1 ;2/209 ;D29/112 |
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