Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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HENRI LUCIEN LAURENT
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HENRI LUCIEN LAURENT
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Application filed by HENRI LUCIEN LAURENTfiledCriticalHENRI LUCIEN LAURENT
Application grantedgrantedCritical
Publication of FR471150ApublicationCriticalpatent/FR471150A/en
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
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR471150D1914-04-201914-04-20
Simultaneous control device for cinematographs and phonographs
ExpiredFR471150A
(en)