Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4694988 | Control installation for variable volume air diffusers | Melvin C. Carlson | 1987-09-22 |
| 4694989 | Control installation for variable volume air diffusers | Melvin C. Carlson | 1987-09-22 |
| 4648552 | Control installation for variable volume air diffusers | Melvin C. Carlson | 1987-03-10 |
| 4634047 | Thermostatically adjustable pressure regulator | — | 1987-01-06 |
| 4572327 | Sound attenuator | — | 1986-02-25 |
| 4513574 | Low Temperature air conditioning system and method | Norman G. Humphreys | 1985-04-30 |
| 4500034 | Electronic control arrangement for system powered HVAC terminal units | James A. Reese | 1985-02-19 |
| 4489881 | Air delivery system for hospital rooms and the like | Michael M. Roberts | 1984-12-25 |
| 4442760 | Flow splitting arrangement for air conditioning terminal units | Ghassan Bader | 1984-04-17 |
| 4399739 | Noise attenuating apparatus for modulating air flow | — | 1983-08-23 |
| 4356963 | Flow adjustment mechanism for air distribution systems | Douglas F. Edwards | 1982-11-02 |
| 4331291 | Pneumatic control circuit for air distribution systems | — | 1982-05-25 |
| 4312475 | Flow adjustment mechanism for air distributor systems | Douglas F. Edwards, Ronald Zimmer | 1982-01-26 |
| 4246918 | Method and apparatus for forced air balancing of damper blades | — | 1981-01-27 |