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| Number | Title | Issue Date |
| 7189158 | Airflow control system A dual airflow control system for an environment having a first air zone and a second air zone. The system includes a first input device operable to generate a first input signal indicative of a desired airflow to the first zone and a second input device operable to... | 03/13/2007 |
| 6511373 | Cornice duct system An energy efficient air distribution system placed within the conditioned space of a building comprising a duct having an interior volume for conducting air. One of the exterior surfaces may have an ornamental design providing the impression the device is... | 01/28/2003 |
| 5181884 | Ventilating device for baseboard heater A ventilating device is removably placed on a baseboard heater having a heated air exit along the top front edge thereof. The ventilating device has a marginal slot forwardly extending above the air exit of the heater and has a blower fan sucking air from... | 01/26/1993 |
