See-saw
USD257685S · kind S · design
2Cited by
2References
1Claims
0Family size
Inventor
Key dates
| Filing date | Aug 21, 1978 |
| Grant date | Dec 23, 1980 |
| Priority date | — |
| Expiry date | Dec 23, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.