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发明名称
SHIELD TUNNELLING MACHINE
摘要
申请公布号
AU5989990(A)
申请公布日期
1991.01.31
申请号
AU19900059899
申请日期
1990.07.26
申请人
KABUSHIKI KAISHA ISEKI KAIHATSU KOKI
发明人
TOSHIO AKESAKA
分类号
E21B7/20;E21D9/06;E21D9/08;E21D9/087;E21D9/12
主分类号
E21B7/20
代理机构
代理人
主权项
地址
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