Plaque with sunk relief
USD251900S · kind S · design
5Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1977 |
| Grant date | May 22, 1979 |
| Priority date | — |
| Expiry date | May 22, 1993 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.