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Priority claimed from JP3691784Aexternal-prioritypatent/JPS60180653A/ja
Priority claimed from JP23069184Aexternal-prioritypatent/JPS61108455A/ja
Application filed by Sumitomo Metal Ind, Sumitomo Heavy IndustriesfiledCriticalSumitomo Metal Ind
Priority claimed from EP85400385Aexternal-prioritypatent/EP0159215B1/de
Application grantedgrantedCritical
Publication of ATE31885T1publicationCriticalpatent/ATE31885T1/de