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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
F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
F23L17/02—Tops for chimneys or ventilating shafts; Terminals for flues
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FR714710D1931-04-021931-04-02Appareil d'aération et d'évacuation pour les buées, l'air vicié, les fumées et les gaz industriels
ExpiredFR714710A
(fr)
Dispositif adaptable aux conduits évacuateurs de fumée, pour l'amé lioration du tirage et l'utilisation rationnelle de la chaleur emportée par les gaz de fumée