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SOC TECH DE RECH IND
Technique de Recherches Industrielles et Mecaniques
Original Assignee
SOC TECH DE RECH IND
Technique de Recherches Industrielles et Mecaniques
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Application filed by SOC TECH DE RECH IND, Technique de Recherches Industrielles et Mecaniques filedCriticalSOC TECH DE RECH IND
Application grantedgrantedCritical
Publication of FR1007259ApublicationCriticalpatent/FR1007259A/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
G03B21/16—Cooling; Preventing overheating
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR1007259D1948-03-121948-03-12Perfectionnement aux projecteurs de cinémas d'amateurs
ExpiredFR1007259A
(fr)