Protective end cap for a ball point pen
USD307920S · kind S · design
11Cited by
9References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 26, 1986 |
| Grant date | May 15, 1990 |
| Priority date | — |
| Expiry date | May 15, 2004 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.