Issued Patents All Time
Showing 1–5 of 5 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 |
| 5140614 | Method and apparatus for detecting digital carrier signals on telephone cables | Douglas R. Connally | 1992-08-18 |
| 4929900 | Method for locating conductive faults in telephone and similar cables | Mark W. Hastings | 1990-05-29 |
| 4440984 | Method of testing telephone cable pairs | — | 1984-04-03 |