Opaque reader
USD255455S · kind S · design
4Cited by
6References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1978 |
| Grant date | Jun 17, 1980 |
| Priority date | — |
| Expiry date | Jun 17, 1994 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.