Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873933 | Float-free arrangement for marine radio distress beacons | Brian S. Bennett | 1989-10-17 |
| 4872208 | Compact monopole digital tachometer generator for use in airborne vehicles | Steven K. Beattie, Paul C L Richards | 1989-10-03 |
| 4815656 | Rural mail box indicator and security lock | Robert F. Brown | 1989-03-28 |