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Method and apparatus using phases for communication in thermostat circuit |
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DC brushless motor controller apparatus and method |
Mitchell R. Rowlette |
2001-04-24 |
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Combined fan and ignition control with selected condition sensing apparatus |
Mitchell R. Rowlette, Mark A. Eifler |
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Method for controlling an induced draft fan for use with gas furnaces |
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1998-09-15 |
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Induced draft fan control for use with gas furnaces |
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Electrical control system for relay operation responsive to thermostat input having improved efficiency |
Walter H. Bailey |
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Induced draft fan control for use with gas furnaces |
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