Stereoscopic viewer and slide holder
USD249796S · kind S · design
2Cited by
2References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1977 |
| Grant date | Oct 3, 1978 |
| Priority date | — |
| Expiry date | Oct 3, 1992 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.