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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
G03B19/00—Cameras
G03B19/18—Motion-picture cameras
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Physics & Mathematics
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FR570568D1923-09-051923-09-05Perfectionnement aux tourelles porte-objectifs pour appareils de prise de vues cinématographiques
ExpiredFR570568A
(fr)