IPC Subgroup
F21V 11/08 using diaphragms containing one or more apertures
Introduced: September 1968
Last revised: January 2006
Full Title
Screens not covered by groups , , or > using diaphragms containing one or more apertures
Classification Context
- Section:
- MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- Class:
- LIGHTING
- Subclass:
- FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
3 direct subcodes
Child Classifications
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- F21V 11/1 of iris type
- F21V 11/12 of slot type
- F21V 11/14 with many small apertures