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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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FR31686D1926-03-201926-03-20Dispositif de mise au point dans les appareils de prise de vues cinématographiques ou photographiques
ExpiredFR31686E
(fr)
Dispositif de mise au point de l'objectif permettant d'actionner en même temps le moteur à ressorts dans les appareils de prise de vues cinématographiques