Electric pencil sharpener
USD250035S · kind S · design
25Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 24, 1977 |
| Grant date | Oct 24, 1978 |
| Priority date | — |
| Expiry date | Oct 24, 1992 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.