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INGENIOERS FRITZ EGNELL FA AB
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INGENIOERS FRITZ EGNELL FA AB
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Application filed by INGENIOERS FRITZ EGNELL FA ABfiledCriticalINGENIOERS FRITZ EGNELL FA AB
Application grantedgrantedCritical
Publication of FR469755ApublicationCriticalpatent/FR469755A/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)
FR469755D1913-03-201914-03-18Dispositif de refroidissement du film des appareils cinématographiques et analogues
ExpiredFR469755A
(fr)
Dispositif pour obtenir avec des appareils cinématographiques la projection d'une image restant véritablement fixe tandis que le ruban se déroule continuellement