Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6170286 | Oil return from refrigeration system evaporator using hot oil as motive force | — | 2001-01-09 |
| 6089031 | Method and apparatus of compressor height and alignment adjustment | David Stegner | 2000-07-18 |
| 5385120 | Fluid heater | William J. Plzak | 1995-01-31 |
| 5284029 | Triple effect absorption heat exchanger combining second cycle generator and first cycle absorber | William J. Plzak | 1994-02-08 |