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发明名称
ECCENTRIC REAMER
摘要
申请公布号
SU1666678(A1)
申请公布日期
1991.07.30
申请号
SU19894692478
申请日期
1989.05.19
申请人
VNII GIDROGEOLOGII INZHENERNOJ GEOLOGII
发明人
BASHKATOV ALEKSEJ D,SU;GRABOVSKIJ MIKHAIL E,SU;SMIRNOV VYACHESLAV G,SU;GORSHKOV IVAN T,SU
分类号
E21B7/28
主分类号
E21B7/28
代理机构
代理人
主权项
地址
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