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Tobis Tonbild Syndikat GmbH
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Tobis Tonbild Syndikat GmbH
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Application filed by Tobis Tonbild Syndikat GmbHfiledCriticalTobis Tonbild Syndikat GmbH
Application grantedgrantedCritical
Publication of FR887666ApublicationCriticalpatent/FR887666A/en
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
FR887666D1941-11-241942-11-12
Device for controlling the symmetry of the partial voltages during the reproduction of sound recording in push-pull
ExpiredFR887666A
(en)