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发明名称
Долото буровое шарошечное
摘要
申请公布号
SU114367(A1)
申请公布日期
1957.11.30
申请号
SU19570586519
申请日期
1957.10.24
申请人
AKOPOV E.A.;ZARKHIN A.M.;KAZANSKIJ N.M.
发明人
AKOPOV E.A.;ZARKHIN A.M.;KAZANSKIJ N.M.
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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