DIFF Subgroup
G04B 3/04 Rigidly-mounted keys, knobs or crowns
Introduced: September 1968
Title
Titles differ between systems:
IPC: Rigidly-mounted keys, knobs, or crowns
CPC: Rigidly-mounted keys, knobs or crowns
Full Title
Full titles differ between systems:
IPC:
Normal winding of clockworks by hand or mechanically; Winding-up several mainsprings or driving weights simultaneously > Rigidly-mounted keys, knobs, or crowns
CPC:
Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously > Rigidly-mounted keys, knobs or crowns
Of 5 combined children, 0 exist in both systems.
5 codes are CPC-only extensions.
Child Classifications
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