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发明名称
DRILL
摘要
申请公布号
SU1721205(A1)
申请公布日期
1992.03.23
申请号
SU19904800238
申请日期
1990.03.12
申请人
VNII METODIKI TEKHNIKI RAZVEDKI
发明人
TSINMAN ALEKSANDR A,SU
分类号
E21B3/00
主分类号
E21B3/00
代理机构
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