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H & M Distributors, Inc. Patents
H & M Distributors, Inc.
Fort Wayne, IN
No. of patents:

Patent Number Title Of Patent Date Issued
4299554 Automatic vent damper and fuel valve control November 10, 1981
An automatic vent damper and fuel valve control for a fluid fuel-fired furnace including an electrically-operated valve in the fuel line, a normally-open damper in the furnace vent having electrically-operated means for closing the damper, and a thermostat for sensing the temperature

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