Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4918671 | Depth sounder operation for hostile environments | — | 1990-04-17 |
| 4916674 | Method and apparatus for improving the shallow water performance of a depth sounder | — | 1990-04-10 |
| 4833477 | Emergency vessel location system | — | 1989-05-23 |
| 4672590 | Talking depth sounder | — | 1987-06-09 |
| 4621348 | Talking depth sounder | — | 1986-11-04 |
| 4616350 | Talking depth sounder | — | 1986-10-07 |
| 4498655 | Wall hanger | — | 1985-02-12 |
| 4489405 | Talking depth sounder | — | 1984-12-18 |
| 4309016 | Wall hanger | — | 1982-01-05 |