Telephone network interface device
USD291081S · kind S · design
13Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 13, 1986 |
| Grant date | Jul 28, 1987 |
| Priority date | — |
| Expiry date | Jul 28, 2001 |
Classification
- Technology area (CPC —)General
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.