Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873913 | Dry roughing pump having a gas film bearing | Gerald R. Pruitt | 1989-10-17 |
| 4754608 | Squeeze film bearing for Stirling cycle compressor pistons | — | 1988-07-05 |
| 4606194 | Cryocooler having low magnetic signature | F. William Pirtle, Harry G. Nicoll | 1986-08-19 |
| 4574591 | Clearance seals and piston for cryogenic refrigerator compressors | — | 1986-03-11 |
| 4550571 | Balanced integral Stirling cryogenic refrigerator | — | 1985-11-05 |
| 4543792 | Refrigeration system with clearance seals | — | 1985-10-01 |