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发明名称
METHOD OF CONTROLLING ATTITUDE OF UNDERGROUND EXCAVATOR
摘要
申请公布号
JPS63268897(A)
申请公布日期
1988.11.07
申请号
JP19870102680
申请日期
1987.04.25
申请人
SHIMIZU CONSTR CO LTD
发明人
NOMURA HAJIME;KAJIOKA YASUO
分类号
E21B44/00;E21B44/02
主分类号
E21B44/00
代理机构
代理人
主权项
地址
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