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
F23L1/00—Passages or apertures for delivering primary air for combustion
F23L1/02—Passages or apertures for delivering primary air for combustion by discharging the air below the fire
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Engineering & Computer Science
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Chemical & Material Sciences
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Combustion & Propulsion
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Mechanical Engineering
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General Engineering & Computer Science
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Financial Or Insurance-Related Operations Such As Payment And Settlement
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Developing Agents For Electrophotography
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Diaphragms For Electromechanical Transducers
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