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Application filed by Klangfilm GmbhfiledCriticalKlangfilm Gmbh
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Publication of DK74797CpublicationCriticalpatent/DK74797C/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
DK47141A1940-03-161941-03-06Apparat til optegnelse af toner ved ændring ad tonesporets bredde.
DK74797C
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