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SIF Societe Independante de Telegraphie Sans Fil
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SIF Societe Independante de Telegraphie Sans Fil
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Application filed by SIF Societe Independante de Telegraphie Sans FilfiledCriticalSIF Societe Independante de Telegraphie Sans Fil
Application grantedgrantedCritical
Publication of FR669743ApublicationCriticalpatent/FR669743A/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
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR669743D1929-02-161929-02-16Procédé de reproduction ciné-phonographique et support pour l'exécution de ce procédé
ExpiredFR669743A
(fr)