DIFF Subgroup
F21V 3/02 characterised by the shape
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Globes; Bowls; Cover glasses > characterised by the shape
CPC:
Globes; Bowls; Cover glasses (with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506) > characterised by the shape
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
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