Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671608 | Geothermal direct expansion heat pump system | Jack L. Womack, William C. Bickford | 1997-09-30 |
| 5623986 | Advanced in-ground/in-water heat exchange unit | — | 1997-04-29 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5671608 | Geothermal direct expansion heat pump system | Jack L. Womack, William C. Bickford | 1997-09-30 |
| 5623986 | Advanced in-ground/in-water heat exchange unit | — | 1997-04-29 |