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MIT BESCHRAENKTER HAFTUNG
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MIT BESCHRAENKTER HAFTUNG
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Application filed by MIT BESCHRAENKTER HAFTUNGfiledCriticalMIT BESCHRAENKTER HAFTUNG
Application grantedgrantedCritical
Publication of FR377614ApublicationCriticalpatent/FR377614A/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
G03B27/18—Maintaining or producing contact pressure between original and light-sensitive material
G03B27/22—Maintaining or producing contact pressure between original and light-sensitive material by stretching over a curved surface
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR377614D1907-05-081907-05-08Appareil pour le tirage d'épreuves héliographiques, etc.
ExpiredFR377614A
(fr)