Penlight magnifier attachment
USD272158S · kind S · design
2Cited by
10References
1Claims
0Family size
Inventors
Key dates
| Filing date | Sep 11, 1981 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Jan 10, 1998 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.