Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5953926 | Heating, cooling, and dehumidifying system with energy recovery | Lane D. Brown, Robert G. Walker, Michael J. Housh | 1999-09-21 |
| 5461876 | Combined ambient-air and earth exchange heat pump system | — | 1995-10-31 |
| 5025634 | Heating and cooling apparatus | — | 1991-06-25 |