Moving film strip by pull on end thereof

Full Title

Film-strip handling of general interest for cameras, projectors or printers > Moving film strip by pull on end thereof

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

Child Classifications

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• G03B 1/04 Pull exerted by take-up spool
• G03B 1/14 Special arrangements to ensure constant length of movement of film