DIFF Main Group
F21V 1/00 Shades for light sources
Introduced: September 1968
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
Child Classifications
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F21V 1/00 Introduced: September 1968
IPC and CPC are identically structured here. All 5 subcodes exist in both systems.
Navigate with arrow keys, Enter to open