Keyboard for staff locator systems
USD316549S · kind S · design
40Cited by
4References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 19, 1988 |
| Grant date | Apr 30, 1991 |
| Priority date | — |
| Expiry date | Apr 30, 2005 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.