Headphone
USD244300S · kind S · design
89Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 11, 1976 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | May 10, 1984 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.