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Publication of FR699987ApublicationCriticalpatent/FR699987A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03B—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
G03B1/00—Film strip handling
G03B1/18—Moving film strip by means which act on the film between the ends thereof
G03B1/20—Acting means
G03B1/32—Friction grippers or rollers
Landscapes
Physics & Mathematics
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General Physics & Mathematics
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FR699987D1929-11-131929-11-13Perfectionnements aux appareils de projections cinématographiques
ExpiredFR699987A
(fr)