Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4878356 | Storage tank scale for a refrigerant recovery system | Robert J. Punches, Gary P. Murray | 1989-11-07 |
| 4809520 | Refrigerant recovery and purification system | Kenneth W. Manz | 1989-03-07 |
| 4805416 | Refrigerant recovery, purification and recharging system | Kenneth W. Manz, Richard Parks, Dennis W. Hickman | 1989-02-21 |