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Priority claimed from JP59056877Aexternal-prioritypatent/JPS60201533A/ja
Priority claimed from JP1985024368Uexternal-prioritypatent/JPH0731371Y2/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP85103391Aexternal-prioritypatent/EP0158193B1/de
Application grantedgrantedCritical
Publication of ATE44419T1publicationCriticalpatent/ATE44419T1/de