F02P 5/04 automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions (dependent on position of personal controls of engine F02P5/02)
Introduced: September 1968
Title
Titles differ between systems:
IPC: automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
CPC: automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions (dependent on position of personal controls of engine F02P5/02)
Full Title
Full titles differ between systems:
Advancing or retarding electric ignition spark; Control therefor > automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
Advancing or retarding ignition; Control therefor > automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions (dependent on position of personal controls of engine F02P5/02)
Of 3 combined children, 2 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 1985.
Child Classifications
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