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LE SYNCHRO CINE
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LE SYNCHRO CINE
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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
G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
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FR41379D1931-08-211931-08-21Procédé et appareils pour la sonorisation des films après coup
ExpiredFR41379E
(fr)