Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4870734 | Method of manufacturing high efficiency heat exchange tube | — | 1989-10-03 |
| 4871014 | Shell and tube heat exchanger | — | 1989-10-03 |
| 4858681 | Shell and tube heat exchanger | — | 1989-08-22 |
| 4773231 | System for preheating water using thermal energy from refrigerant system | — | 1988-09-27 |