Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4943805 | Conduit-enclosed induction loop for a vehicle detector | — | 1990-07-24 |
| 4939512 | Modular, non-metallic, hard shell, predimensioned, preformed and sealed induction loop vehicle detection system and method of installation | Douglas B. MacDonald | 1990-07-03 |