Combined optical viewer and transparency housing
USD337339S · kind S · design
18Cited by
10References
1Claims
0Family size
Inventor
Key dates
| Filing date | Feb 12, 1991 |
| Grant date | Jul 13, 1993 |
| Priority date | — |
| Expiry date | Jul 13, 2007 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.