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FERNSCHREIBER AG
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FERNSCHREIBER AG
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Application filed by FERNSCHREIBER AGfiledCriticalFERNSCHREIBER AG
Application grantedgrantedCritical
Publication of FR730505ApublicationCriticalpatent/FR730505A/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
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Physics & Mathematics
(AREA)
General Physics & Mathematics
(AREA)
FR730505D1931-10-311932-01-18Procédé et dispositif pour la reproduction optique du texte des films photo-sonores
ExpiredFR730505A
(fr)