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Priority claimed from JP4272366Aexternal-prioritypatent/JPS4938260B1/ja
Priority claimed from JP322467Aexternal-prioritypatent/JPS5140068B1/ja
Priority claimed from JP396267Aexternal-prioritypatent/JPS5138701B1/ja
Application filed by Hisao Yamamoto, Masaru NakaofiledCriticalHisao Yamamoto
Publication of CS191864B2publicationCriticalpatent/CS191864B2/cs