Automatic pencil
USD334407S · kind S · design
26Cited by
11References
1Claims
0Family size
Inventor
Key dates
| Filing date | May 24, 1988 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Mar 30, 2007 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.