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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5/00
Systems for controlling combustion
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F23N5/20
with a time program acting through electrical means, e.g. using time-delay relays
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F23N5/203
using electronic means
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