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发明名称
Шарошечное долото для бурения скважин
摘要
申请公布号
SU86962(A1)
申请公布日期
1950.11.30
申请号
SU19500414888
申请日期
1950.03.24
申请人
PIMENOV A.N.
发明人
PIMENOV A.N.
分类号
E21B10/08
主分类号
E21B10/08
代理机构
代理人
主权项
地址
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