Optical glasses
USD295286S · kind S · design
43Cited by
3References
1Claims
0Family size
Inventor
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Apr 19, 1988 |
| Priority date | — |
| Expiry date | Apr 19, 2002 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.