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Application filed by 三菱鉛筆株式会社filedCritical三菱鉛筆株式会社
Priority to JP1978028206UpriorityCriticalpatent/JPS5928876Y2/ja
Publication of JPS54132336UpublicationCriticalpatent/JPS54132336U/ja
Application grantedgrantedCritical
Publication of JPS5928876Y2publicationCriticalpatent/JPS5928876Y2/ja
