MP3 player-combined headphone
USD557685S1 · kind S1 · design
136Cited by
13References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 8, 2006 |
| Grant date | Dec 18, 2007 |
| Priority date | — |
| Expiry date | Dec 18, 2021 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.