Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pentel Co Ltd
Original Assignee
Pentel Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Pentel Co LtdfiledCriticalPentel Co Ltd
Priority to JP5585981ApriorityCriticalpatent/JPS57170799A/ja
Publication of JPS57170799ApublicationCriticalpatent/JPS57170799A/ja
Publication of JPS6342596B2publicationCriticalpatent/JPS6342596B2/ja
