Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867558 | Method of remotely detecting submarines using a laser | Donald A. Leonard | 1989-09-19 |
| 4867564 | Apparatus for and method of remotely sensing sub-surface water temperatures | Donald A. Leonard | 1989-09-19 |
| 4804891 | Photomultiplier tube with gain control | — | 1989-02-14 |