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Publication of FR470675ApublicationCriticalpatent/FR470675A/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
G03B27/00—Photographic printing apparatus
G03B27/02—Exposure apparatus for contact printing
G03B27/14—Details
G03B27/28—Edge-masking devices
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR470675D1913-04-091914-04-08Procédé et appareil pour tirer des photographies dégradées
ExpiredFR470675A
(fr)