Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6149066 | Method and apparatus for controlling supplemental heat in a heat pump system | Timothy J. Perry, Larry J. Burkhart, Nathan D. Wright, Raymond A. Rust, Jr., Louis J. Sullivan | 2000-11-21 |
| 5967411 | Method and apparatus for controlling supplemental heat in a heat pump system | Timothy J. Perry, Larry J. Burkhart, Nathan D. Wright, Raymond A. Rust, Jr., Louis J. Sullivan | 1999-10-19 |
| 5647533 | Run time criteria to control indoor blower speed | Don A. Schuster, Larry J. Burkhart, Frederick J. Keller, Jr. | 1997-07-15 |
| 5533568 | Managing supplementary heat during defrost on heat pumps | Don A. Schuster, Larry J. Burkhart, Gary D. Wedlake | 1996-07-09 |