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Priority claimed from US356893Aexternal-prioritypatent/US3880603A/en
Priority claimed from AT618173Aexternal-prioritypatent/AT342884B/de
Application filed by Whetstone Clayton NfiledCriticalWhetstone Clayton N
Publication of ATA356877ApublicationCriticalpatent/ATA356877A/de
Application grantedgrantedCritical
Publication of AT355824BpublicationCriticalpatent/AT355824B/de
AT356877A1973-05-031977-05-18Schichtwerkstoff fuer magnetische aufzeichnungs- und wiedergabekoepfe sowie verfahren zu seiner herstellung
AT355824B
(de)