Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9429613 | Time domain reflectometer | — | 2016-08-30 |
| 6822457 | Method of precisely determining the location of a fault on an electrical transmission system | Douglas A. Hartzell | 2004-11-23 |
| 5461318 | Apparatus and method for improving a time domain reflectometer | Douglas A. Hartzell, Edward J. Thomassen, Lee M. Rezac | 1995-10-24 |
| 4471452 | Digital time base with coherent rate switching | — | 1984-09-11 |