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Licentia Patent Verwaltungs GmbH
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Licentia Patent Verwaltungs GmbH
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Publication of FR877592ApublicationCriticalpatent/FR877592A/fr
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
G11B5/74—Record carriers characterised by the form, e.g. sheet shaped to wrap around a drum
FR877592D1940-12-141941-12-08Procédé pour insérer des additions et des modifications de dictées enregistrées d'après le procédé sonore magnétique
ExpiredFR877592A
(fr)