DIFF Main Group
F21V 5/00 Refractors for light sources (characterised by cooling arrangements F21V29/504)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Refractors for light sources
CPC: Refractors for light sources (characterised by cooling arrangements F21V29/504)
Full Title
Full titles differ between systems:
IPC:
Refractors for light sources
CPC:
Refractors for light sources (characterised by cooling arrangements F21V29/504)
Of 9 combined children, 5 exist in both systems.
4 codes are CPC-only extensions.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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