Multi-functional keyboard for data processing systems
USD319632S · kind S · design
38Cited by
8References
1Claims
0Family size
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Inventor
Key dates
| Filing date | May 3, 1989 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Sep 3, 2005 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.