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发明名称
AUGER-FIXING DEVICE OF SCREW AUGER THRUSTING DEVICE FOR TUNNEL EXCAVATION
摘要
申请公布号
JPH07208055(A)
申请公布日期
1995.08.08
申请号
JP19940002125
申请日期
1994.01.13
申请人
TOKYO GAS CO LTD
发明人
SATAKE YUKINOBU
分类号
E21B7/00;E21B7/04;E21B17/02;E21B19/02;(IPC1-7):E21B7/04
主分类号
E21B7/00
代理机构
代理人
主权项
地址
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