Mechanisms for setting frequency

Introduced: January 1980

Of 5 combined children, 3 exist in both systems.

2 codes are CPC-only extensions.

IPC defines codes here since 1980.

Child Classifications

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G04B 18/003 CPC only CPC only
G04B 18/006 CPC only CPC only
G04B 18/02 Regulator devices; Indexing devices since 1980 +5 CPC IPC+CPC Available in IPC and CPC
G04B 18/04 Adjusting the beat of the pendulum, balance, or the like, e.g. putting into beat since 1980 IPC+CPC Available in IPC and CPC
G04B 18/08 Component parts or constructional details since 1980 IPC+CPC Available in IPC and CPC