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Fluid fuel flow control system for forced draft heating units
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Forced-draft unit heater having outside combustion air source
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Gaseous fuel burner for curved combustion chambers
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Circular-type, forced air, forced draft unit heater
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Forced-air, forced-draft unit heater
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Combination oil-gas fired conversion burner
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Apparatus for the selective burning of different type gaseous fuels embodying a common burner element
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Adjustable ventilator grille
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Oil-fired conversion burner
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Gas-fired forced air heater
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Gas-fired conversion burner
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Gas-fired forced draft and air flow unit air heater
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Flame retention head for gas burners
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CA592889A
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Gaseous fuel burner for curved combustion chambers
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Forced-draft unit heater having outside combustion air source
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CA562133A
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Circular-type, forced air, forced draft unit heater
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CA470912A
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Gas fired forced draft and air flow unit air heaters
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CA546671A
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Forced-air, forced-draft unit heater
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Safety control circuit for forced draft heating systems
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CA688819A
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Diaphragm actuated switch
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