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CARL ETHAN AKELEY
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CARL ETHAN AKELEY
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Publication of FR518549ApublicationCriticalpatent/FR518549A/en
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
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR518549A1918-07-231920-07-01
Improvements to viewfinders for cinematographic cameras
ExpiredFR518549A
(en)