Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5203857 | Gas compressor head and discharge valve construction | Gerald L. Terwilliger, Robert D. Douglas, Prasanta K. Roy | 1993-04-20 |
| 5080130 | Gas compressor head and discharge valve construction | Gerald L. Terwilliger, Robert D. Douglas, Prasanta K. Roy | 1992-01-14 |
| 4930406 | Refrigerant gas compressor construction | — | 1990-06-05 |
| 4850816 | Refrigerant gas compressor unit | — | 1989-07-25 |