DIFF Main Group
G04C 11/00 Synchronisation of independently-driven clocks
Introduced: September 1968
CPC subdivides this area 2x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- G04C 11/06 with direct mechanical action on the time-indicating means since 1980 IPC+CPC Available in IPC and CPC