Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5970550 | Multiple compartment inflatable mattress | — | 1999-10-26 |
| 5852939 | Heating and air conditioning device using geothermal heat exchange | — | 1998-12-29 |
| 4920757 | Geothermal heating and air conditioning system | Dewey Mixson | 1990-05-01 |