Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879546 | Ultrasonic hand-held refrigerant leak detector | Byron J. Dunham, Gary P. Murray | 1989-11-07 |
| 4798055 | Refrigeration system analyzer | Gary P. Murray, Ralph C. Lower, Byron J. Dunham | 1989-01-17 |