Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5090445 | Air actuated damper | — | 1992-02-25 |
| 4995375 | Heat exchange pipes for a furnace system | — | 1991-02-26 |
| 4981262 | Unit for supplying combustion air to a furnace | — | 1991-01-01 |
| 4262608 | Method and apparatus for powered flue products exhaust and preheated combustion air supply | — | 1981-04-21 |