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.)
Koken Boring Machine Co Ltd
Original Assignee
Koken Boring Machine 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 Koken Boring Machine Co LtdfiledCriticalKoken Boring Machine Co Ltd
Priority to JP1988131555UpriorityCriticalpatent/JPH0723618Y2/ja
Publication of JPH0251724UpublicationCriticalpatent/JPH0251724U/ja
Application grantedgrantedCritical
Publication of JPH0723618Y2publicationCriticalpatent/JPH0723618Y2/ja