Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6882949 | Method and apparatus for testing heat pumps | Charles G. Butts, Richard H. Bair, III | 2005-04-19 |
| 6477849 | Method and apparatus for testing heat pumps | Charles G. Butts, Richard H. Bair, III | 2002-11-12 |