Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6126540 | Staged power exhaust for HVAC air handling units | James Reisdorfer | 2000-10-03 |
| 5597354 | Indoor air quality control for constant volume heating, ventilating and air conditioning units | Clay G. Nesler | 1997-01-28 |
| 5292280 | Method and apparatus for controlling ventilation rates and indoor air quality in an HVAC system | Mark W. Tellier, Kirk H. Drees | 1994-03-08 |
| 4794314 | Environmental position actuator apparatus having load responsive limit control apparatus | Raymond D. Feller, Jr., Richard N. Laakaniemi | 1988-12-27 |
| 4207914 | Fluid relay apparatus | Thomas M. Holloway, Richard N. Laakaniemi, Warren A. Lederman | 1980-06-17 |
| 4188968 | Flow system with pressure level responsive air admission control | Arnold G. Trobaugh | 1980-02-19 |