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发明名称
TUNNELING SHIELD
摘要
申请公布号
SU1590553(A1)
申请公布日期
1990.09.07
申请号
SU19884425383
申请日期
1988.05.16
申请人
GI PO IZYSKANIYU PROEKT
发明人
KLETSKO VALENTIN S,SU;STRELTSOV VLADIMIR V,SU
分类号
E21D9/06;E21D9/00
主分类号
E21D9/06
代理机构
代理人
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地址
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