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Priority claimed from JP60200078Aexternal-prioritypatent/JPS6260385A/ja
Priority claimed from JP60211725Aexternal-prioritypatent/JPH0727340B2/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP86112491Aexternal-prioritypatent/EP0216248B1/de
Application grantedgrantedCritical
Publication of ATE54527T1publicationCriticalpatent/ATE54527T1/de