Paper weight
USD257266S · kind S · design
8Cited by
5References
1Claims
0Family size
Inventors
Key dates
| Filing date | May 1, 1978 |
| Grant date | Oct 7, 1980 |
| Priority date | — |
| Expiry date | Oct 7, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.