Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5365578 | Method and system for transferring special circuit telephone pairs | Douglas R. Connally, Wayne Matthews | 1994-11-15 |
| 5297167 | Method and apparatus for detecting digital carrier signals on telephone cables | Douglas R. Connally | 1994-03-22 |