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BRITISH CONS INVEST CORP Ltd
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BRITISH CONS INVEST CORP Ltd
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Application filed by BRITISH CONS INVEST CORP LtdfiledCriticalBRITISH CONS INVEST CORP Ltd
Application grantedgrantedCritical
Publication of FR658552ApublicationCriticalpatent/FR658552A/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
G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
G03B31/02—Associated working of cameras or projectors with sound-recording or sound-reproducing means in which sound track is on a moving-picture film
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR658552D1927-08-051928-08-03Perfectionnements au dispositif d'entraînement des films cinématographiques
ExpiredFR658552A
(fr)