DIFF Subgroup
F21L 13/06 with mechanical drive, e.g. spring
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Electric lighting devices with built-in electric generators > with mechanical drive, e.g. spring
CPC:
Electric lighting devices with built-in electric generators (with solar cells F21L4/00) > with mechanical drive, e.g. spring
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
Child Classifications
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