IPC Subgroup
G03B 21/54 Accessories
Introduced: September 1968
Last revised: January 2006
Full Title
Projectors or projection-type viewers; Accessories therefor > Accessories
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
film CARTRIDGES for projectors
2 direct subcodes
Child Classifications
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- G03B 21/56 Projection screens
- G03B 21/64 Means for mounting individual pictures to be projected, e.g. frame for transparency