Headphones
USD333659S · kind S · design
9Cited by
8References
1Claims
0Family size
Inventor
Key dates
| Filing date | Nov 5, 1990 |
| Grant date | Mar 2, 1993 |
| Priority date | — |
| Expiry date | Mar 2, 2007 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.