Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888950 | Magnetic driven hydrodynamic lubrication system for free piston stirling engine | — | 1989-12-26 |
| 4888951 | Phase synchronization and vibration cancellation for free piston Stirling machines | — | 1989-12-26 |
| 4805408 | Stirling engine power regulation system | David M. Berchowitz | 1989-02-21 |
| 4802332 | Sliding surface lubrication particularly advantageous for a free piston stirling engine | — | 1989-02-07 |