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Publication of FR794838ApublicationCriticalpatent/FR794838A/fr
F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
F23L9/00—Passages or apertures for delivering secondary air for completing combustion of fuel
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FR794838D1934-11-281934-11-28économiseur de combustible pour chauffage central, etc.
ExpiredFR794838A
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