DIFF Subgroup
F02M 23/02 with personal control, or with secondary-air valve controlled by main combustion-air throttle
Introduced: September 1968
Title
Titles differ between systems:
IPC: with personal control
CPC: with personal control, or with secondary-air valve controlled by main combustion-air throttle
Full Title
Full titles differ between systems:
IPC:
Apparatus for adding secondary air to fuel-air mixture > with personal control
CPC:
Apparatus for adding secondary air to fuel-air mixture > with personal control, or with secondary-air valve controlled by main combustion-air throttle
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1990.
Child Classifications
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- F02M 23/03 the secondary air-valve controlled by main combustion-air throttle since 1990 IPC+CPC Available in IPC and CPC