Patent classifications
F
MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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F23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
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F23N
REGULATING OR CONTROLLING COMBUSTION
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3/00
Regulating air supply or draught
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F23N3/04
by operation of single valves or dampers by temperature sensitive elements
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F23N3/042
using electronic means
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