FR1053074A - Perfectionnements à la photographie en relief et application notamment à la stéréoscopie, à la cinématographie et à la télévision
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Perfectionnements à la photographie en relief et application notamment à la stéréoscopie, à la cinématographie et à la télévision
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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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/54—Accessories
G03B21/56—Projection screens
G03B21/60—Projection screens characterised by the nature of the surface
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FR1053074D1952-03-261952-03-26Perfectionnements à la photographie en relief et application notamment à la stéréoscopie, à la cinématographie et à la télévision
ExpiredFR1053074A
(fr)