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Societe des Etablissements Gaumont
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Societe des Etablissements Gaumont
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Publication of FR666790ApublicationCriticalpatent/FR666790A/en
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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/32—Details specially adapted for motion-picture projection
G03B21/43—Driving mechanisms
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR666790D1928-03-301928-03-30
Advanced film winding system in a cinematographic device
ExpiredFR666790A
(en)