Track ball
USD301256S · kind S · design
8Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 7, 1986 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | May 23, 2003 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.