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Publication of FR795072ApublicationCriticalpatent/FR795072A/fr
G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
G03C5/12—Cinematrographic processes of taking pictures or printing
G03C5/14—Cinematrographic processes of taking pictures or printing combined with sound-recording
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FR795072D1934-09-221935-09-17Procédé pour la reproduction d'enregistrements sonores, en particulier d'enregistrements photographiques du son
ExpiredFR795072A
(fr)