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.)
KOUKEN SHISUI KOUGIYOU KK
Koken Boring Machine Co Ltd
Original Assignee
KOUKEN SHISUI KOUGIYOU KK
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 KOUKEN SHISUI KOUGIYOU KK, Koken Boring Machine Co LtdfiledCriticalKOUKEN SHISUI KOUGIYOU KK
Priority to JP12509175ApriorityCriticalpatent/JPS5249605A/en
Publication of JPS5249605ApublicationCriticalpatent/JPS5249605A/en