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Centre National de la Recherche Scientifique CNRS
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Centre National de la Recherche Scientifique CNRS
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Filing date
Publication date
Application filed by Centre National de la Recherche Scientifique CNRSfiledCriticalCentre National de la Recherche Scientifique CNRS
Application grantedgrantedCritical
Publication of FR997990ApublicationCriticalpatent/FR997990A/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
G03B21/00—Projectors or projection-type viewers; Accessories therefor
G03B21/14—Details
G03B21/20—Lamp housings
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR997990D1949-01-211949-01-21Dispositif d'éclairage pour appareil de projection cinématographique
ExpiredFR997990A
(fr)