Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836757 | Pressure actuated movable head for a resonant reciprocating compressor balance chamber | Peter W. Curwen | 1989-06-06 |
| 4814650 | Flat plunger linear electrodynamic machine | Peter W. Curwen | 1989-03-21 |