Data communications terminal for deaf and/or deaf-blind persons
USD308668S · kind S · design
14Cited by
14References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1988 |
| Grant date | Jun 19, 1990 |
| Priority date | — |
| Expiry date | Jun 19, 2004 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.