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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Klangfilm GmbH
Original Assignee
Klangfilm GmbH
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Publication date
Application filed by Klangfilm GmbHfiledCriticalKlangfilm GmbH
Application grantedgrantedCritical
Publication of FR795920ApublicationCriticalpatent/FR795920A/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
FR795920D1934-10-051935-10-03
Electro-dynamic device for the production of zero-line offset sound recordings
ExpiredFR795920A
(en)