U.S. patent number D673,520 [Application Number D/401,324] was granted by the patent office on 2013-01-01 for headphone. This patent grant is currently assigned to Shenzhen Kal Ju Yuan Technology Co. Ltd. Invention is credited to Chao Tan.
United States Patent | D673,520 |
Tan | January 1, 2013 |
Inventors: | Tan; Chao (Shenzhen, CN) |
---|---|
Assignee: | Shenzhen Kal Ju Yuan Technology Co.
Ltd (ShenZhen, GuangDong, CN) |
Appl. No.: | D/401,324 |
Filed: | September 9, 2011 |
Current U.S. Class: | D14/205 |
Current International Class: | 1401 |
Field of Search: | ;D14/205,206,223 ;181/129,130,135 ;379/430,433 ;381/380,381,374 ;D29/112 ;2/209 ;455/90.3,575.1 |
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