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经营范围
发明名称
Колонковое сверло
摘要
申请公布号
SU96658(A1)
申请公布日期
1953.11.30
申请号
SU19460345942
申请日期
1946.06.20
申请人
BOLDYREV E.S.;BYKOV P.L.;FISUN N.A.
发明人
BOLDYREV E.S.;BYKOV P.L.;FISUN N.A.
分类号
E21B3/00
主分类号
E21B3/00
代理机构
代理人
主权项
地址
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