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Publication of FR715916ApublicationCriticalpatent/FR715916A/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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/32—Details specially adapted for motion-picture projection
G03B21/321—Holders for films, e.g. reels, cassettes, spindles
G03B21/326—Means for fixing the film on the axis of a reel or spindle
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FR715916D1931-04-231931-04-23Perfectionnements aux bobines pour films cinématographiques
ExpiredFR715916A
(fr)