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Priority claimed from JP14685082Uexternal-prioritypatent/JPS5953558U/ja
Priority claimed from JP1982148915Uexternal-prioritypatent/JPS5953417U/ja
Application filed by Sony CorpfiledCriticalSony Corp
Priority claimed from EP83305750Aexternal-prioritypatent/EP0104931B1/de
Application grantedgrantedCritical
Publication of ATE44327T1publicationCriticalpatent/ATE44327T1/de