F23N 5/203 — IPC vs CPC Diff | Patent Classification Explorer

DIFF Subgroup

F23N 5/203

Full Title

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

This code exists only in CPC.

Diff view requires codes present in both systems.

View in CPC →