Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666406 | Hazard prevention for telephone line interface circuits | Brian A. F. S. Sutherland, Paul Fong-Yan Hung | 1997-09-09 |
| 5661794 | Telephone line interface circuit with voltage control | Reinhard W. Rosch | 1997-08-26 |