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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
G03B19/02—Still-picture cameras
G03B19/04—Roll-film cameras
G03B19/08—Roll-film cameras with provision for alternative use with plates or cut-films
Landscapes
Physics & Mathematics
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General Physics & Mathematics
(AREA)
FR493191D1918-11-191918-11-19Transformateur pour appareils photographiques
ExpiredFR493191A
(fr)