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经营范围
发明名称
Insert for rock drills
摘要
申请公布号
GB683018(A)
申请公布日期
1952.11.19
申请号
GB19510008671
申请日期
1951.04.13
申请人
SANDVIKENS JERNVERKS AKTIEBOLAG
发明人
分类号
E21B10/58
主分类号
E21B10/58
代理机构
代理人
主权项
地址
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