IPC Main Group
G03B 11/00 Filters or other obturators specially adapted for photographic purposes
Introduced: September 1968
Last revised: January 2021
Classification Context
- Section:
- PHYSICS
- Class:
- PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- Subclass:
- APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
Related Keywords
FILTER(S) for photographic purposes
2 direct subcodes
Child Classifications
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- G03B 11/02 Sky masks
- G03B 11/04 Hoods or caps for eliminating unwanted light from lenses, viewfinders, or focusing aids