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Priority claimed from JP13303288Aexternal-prioritypatent/JPH01302105A/en
Priority claimed from JP1988072638Uexternal-prioritypatent/JPH0750654Y2/en
Priority claimed from JP14227888Aexternal-prioritypatent/JPH01311214A/en
Application filed by Sony Magnescale IncfiledCriticalSony Magnescale Inc
Publication of IT8948019A0publicationCriticalpatent/IT8948019A0/en
Application grantedgrantedCritical
Publication of IT1231446BpublicationCriticalpatent/IT1231446B/en