Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5136287 | Traffic-related message signal using light-emitting diodes | — | 1992-08-04 |
| 4954822 | Traffic signal using light-emitting diodes | — | 1990-09-04 |
| 4651771 | Hydrant protective cap and cover structure and operating wrench therefor | Daniel W. Borenstein | 1987-03-24 |