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Application filed by 日本機器鋼業株式会社filedCritical日本機器鋼業株式会社
Priority to JP11616481UpriorityCriticalpatent/JPS5823834U/ja
Publication of JPS5823834UpublicationCriticalpatent/JPS5823834U/ja
Application grantedgrantedCritical
Publication of JPS636150Y2publicationCriticalpatent/JPS636150Y2/ja