IPC Main Group
G03B 3/00 Focusing arrangements of general interest for cameras, projectors or printers
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
Scope Notes
Application references: Focusing aids for cameras Means for focusing for cameras Means for automatic focusing of projectors or projection-type viewers Means for automatic focusing of photographic printing apparatus
3 direct subcodes
Child Classifications
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