IPC Subgroup
F21V 5/04 of lens shape
Introduced: September 1968
Last revised: January 2006
Full Title
Refractors for light sources > of lens shape
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
Related Keywords
BULLS -eyes for lanternsLENS(ES) for lamps