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发明名称
SHIELD TUNNELING APPARATUS
摘要
申请公布号
PH22021(A)
申请公布日期
1988.05.13
申请号
PH19460000305
申请日期
1984.04.13
申请人
ISEKI KAIHATSU KOKI K.K.
发明人
AKESAKA TOSHIO
分类号
E21B7/20;E21D9/06;E21D9/08;E21D9/087
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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