CPC Subgroup
F23N 5/12 using ionisation-sensitive elements, i.e. flame rods
Full Title
Systems for controlling combustion (regulating fuel supply F23N1/00, regulating air supply or draught F23N3/00) > using devices responsive to thermal changes or to thermal expansion of a medium > using ionisation-sensitive elements, i.e. flame rods
2 direct subcodes
Child Classifications
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