Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4340355 | Furnace control using induced draft blower, exhaust gas flow rate sensing and density compensation | Ralph H. Torborg | 1982-07-20 |
| 4334855 | Furnace control using induced draft blower and exhaust gas differential pressure sensing | — | 1982-06-15 |