DIFF Subgroup
G04B 19/04 Hands; Discs with a single mark or the like
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Indicating the time by visual means > Hands; Discs with a single mark or the like
CPC:
Indicating the time by visual means ( by electric lamps G04C17/02; display arrangements in general G09F) > Hands; Discs with a single mark or the like
Of 4 combined children, 0 exist in both systems.
4 codes are CPC-only extensions.
Child Classifications
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