Data communications terminal for deaf and/or deaf-blind persons
USD301233S · kind S · design
10Cited by
12References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 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.