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Publication of FR915331ApublicationCriticalpatent/FR915331A/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
G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
G03B27/52—Details
G03B27/62—Holders for the original
G03B27/64—Holders for the original using a vacuum or fluid pressure
Landscapes
Physics & Mathematics
(AREA)
Fluid Mechanics
(AREA)
General Physics & Mathematics
(AREA)
FR915331D1945-05-081945-05-08Procédé et appareil pour la photographie de documents
ExpiredFR915331A
(fr)