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Combination flue and vent damper

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Patent

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Combination pressure and temperature limit control for a fuel-fi

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Patent

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Control circuit for combustion systems

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Patent

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Control device for a gas-fired appliance

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Reexamination Certificate

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Control device for a gas-fired appliance

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Reexamination Certificate

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Control for furnace flue damper

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Patent

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Control system for controlling the fuel/air ratio of combustion

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Patent

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Control system for gas fired heating apparatus using radiant hea

Combustion – Timer – programmer – retarder or condition responsive control – Of or by exhaust damper or exhaust pump
Patent

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