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ILE POUR L ETUDE de la PHOTOGR
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ILE POUR L ETUDE de la PHOTOGR
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Application filed by ILE POUR L ETUDE de la PHOTOGRfiledCriticalILE POUR L ETUDE de la PHOTOGR
Application grantedgrantedCritical
Publication of FR654243ApublicationCriticalpatent/FR654243A/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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/32—Details specially adapted for motion-picture projection
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR654243D1927-10-061927-10-06
Improvements to film embossing machines for color photography and cinematography
ExpiredFR654243A
(en)