DIFF Subgroup
F21V 25/12 Flameproof or explosion-proof arrangements
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Safety devices structurally associated with lighting devices > Flameproof or explosion-proof arrangements
CPC:
Safety devices structurally associated with lighting devices (gas- tight or water-tight arrangements F21V31/00; in general F16P; protective circuit arrangements per se H02H7/00) > Flameproof or explosion-proof arrangements
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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