Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878297 | Hydrostatic level and elevation measuring device | — | 1989-11-07 |
| D304309 | Transmitter case | — | 1989-10-31 |
| D302157 | Radio receiver housing | — | 1989-07-11 |
| D301685 | Security alarm bracket | — | 1989-06-20 |
| D301227 | Battery charging adapter for a remote monitoring and alarm system | — | 1989-05-23 |