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发明名称
Способ изготовления буровых коронок
摘要
申请公布号
SU50194(A1)
申请公布日期
1937.01.31
申请号
SU19350161424
申请日期
1935.01.25
申请人
BOGOSLOVSKIJ M.M.;ILIN K.P.
发明人
BOGOSLOVSKIJ M.M.;ILIN K.P.
分类号
E21B10/48
主分类号
E21B10/48
代理机构
代理人
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地址
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