DIFF Subgroup
F23N 5/20 with a time program acting through electrical means, e.g. using time-delay relays
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Systems for controlling combustion > with a time program acting through electrical means, e.g. using time-delay relays
CPC:
Systems for controlling combustion (regulating fuel supply F23N1/00, regulating air supply or draught F23N3/00) > with a time program acting through electrical means, e.g. using time-delay relays
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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