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.)
Tokyu Construction Co Ltd
Koken Boring Machine Co Ltd
Original Assignee
Tokyu Construction Co Ltd
Koken Sisui Kogyo KK
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 Tokyu Construction Co Ltd, Koken Sisui Kogyo KKfiledCriticalTokyu Construction Co Ltd
Priority to JP3864784ApriorityCriticalpatent/JPS60184197A/ja
Publication of JPS60184197ApublicationCriticalpatent/JPS60184197A/ja
Publication of JPH0216836B2publicationCriticalpatent/JPH0216836B2/ja