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Publication date
Publication of BE514974ApublicationCriticalpatent/BE514974A/xx
G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
G11B25/00—Apparatus characterised by the shape of record carrier employed but not specific to the method of recording or reproducing, e.g. dictating apparatus; Combinations of such apparatus
G11B25/10—Apparatus capable of using record carriers defined in more than one of the sub-groups G11B25/02 - G11B25/08; Adaptor devices therefor