Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6135744 | Piston unloader arrangement for screw compressors | Robert Mayfield | 2000-10-24 |
| 5509273 | Gas actuated slide valve in a screw compressor | Rodney L. Lakowske, Arthur L. Butterworth | 1996-04-23 |
| 5341658 | Fail safe mechanical oil shutoff arrangement for screw compressor | Jerome C. Roach | 1994-08-30 |
| 5203685 | Piston unloader arrangement for screw compressors | Peter J. Linnert | 1993-04-20 |
| 4701114 | Compressor suction gas heat shield | James R. Quinn, Peter J. Linnert | 1987-10-20 |