Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5666889 | Apparatus and method for furnace combustion control | Michael E. Rose | 1997-09-16 |
| 5542470 | Crimped joint design for clamshell heat exchanger | — | 1996-08-06 |
| 5176512 | Inshot burner cluster apparatus | — | 1993-01-05 |
| 5137056 | Air flapper valve assembly | Delbert Steven Christopher | 1992-08-11 |
| 5105798 | Heating efficiency and noise reduction enclosure | — | 1992-04-21 |
| 5074280 | Sectional high efficiency heat exchanger | — | 1991-12-24 |
| 5056500 | Furnace damper means | — | 1991-10-15 |