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Individual
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Individual
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Publication of FR516237ApublicationCriticalpatent/FR516237A/fr
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
G03B9/00—Exposure-making shutters; Diaphragms
G03B9/08—Shutters
G03B9/10—Blade or disc rotating or pivoting about axis normal to its plane
G03B9/18—More than two members
G03B9/20—More than two members each moving in a single direction first to open and then to reclose
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR516237A1920-06-011920-06-01Obturateur d'objectif à grand rendement pour appareil photographique d'avion
ExpiredFR516237A
(fr)