DIFF Subgroup
F21S 45/43 using gas
Introduced: January 2018
Full Title
Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light > Cooling of lighting devices > Forced cooling > using gas
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 2018.
Child Classifications
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