Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836757 | Pressure actuated movable head for a resonant reciprocating compressor balance chamber | Ralph Hurst | 1989-06-06 |
| 4814650 | Flat plunger linear electrodynamic machine | Ralph Hurst | 1989-03-21 |
| 4781546 | Linear resonant reciprocating machines | — | 1988-11-01 |
| 4750871 | Stabilizing means for free piston-type linear resonant reciprocating machines | — | 1988-06-14 |
| 4750870 | Pressure actuated movable head for a resonant reciprocating compressor balance chamber | — | 1988-06-14 |
| 4360087 | Suspension and vibration isolation system for a linear reciprocating machine | — | 1982-11-23 |
| 4353220 | Resonant piston compressor having improved stroke control for load-following electric heat pumps and the like | Richard A. Dorman | 1982-10-12 |