Track ball unit
USD292600S · kind S · design
33Cited by
2References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 1, 1984 |
| Grant date | Nov 3, 1987 |
| Priority date | — |
| Expiry date | Nov 3, 2001 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.