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Priority claimed from JP9585071Aexternal-prioritypatent/JPS5021422B2/ja
Priority claimed from JP4648772Aexternal-prioritypatent/JPS537379B2/ja
Priority claimed from JP5252872Aexternal-prioritypatent/JPS5332351B2/ja
Priority claimed from JP6662472Aexternal-prioritypatent/JPS5232337B2/ja
Application filed by Riken Keikinzoku Kogyo KkfiledCriticalRiken Keikinzoku Kogyo Kk
Publication of HK36577ApublicationCriticalpatent/HK36577A/en