Drawing instrument
USD345311S · kind S · design
2Cited by
6References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 4, 1992 |
| Grant date | Mar 22, 1994 |
| Priority date | — |
| Expiry date | Mar 22, 2008 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.