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L Gaumont & Cie Soc
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L Gaumont & Cie Soc
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Application filed by L Gaumont & Cie SocfiledCriticalL Gaumont & Cie Soc
Application grantedgrantedCritical
Publication of FR7121EpublicationCriticalpatent/FR7121E/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
Landscapes
Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR7121D1906-01-081906-12-31Dispositifs pour le fonctionnement en synchronisme de cinématographes et phonographes combinés
ExpiredFR7121E
(fr)