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Application filed by Klangfilm GmbhfiledCriticalKlangfilm Gmbh
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Publication of DK53902CpublicationCriticalpatent/DK53902C/da
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
DK53902D1934-12-191935-12-18Fremgangsmaade og Apparat til Fremstilling af støjfri Lydoptegnelser i Amplitudeskrift.
DK53902C
(da)