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经营范围
发明名称
Sonde à couronne
摘要
申请公布号
FR1328040(A)
申请公布日期
1963.05.24
申请号
FR19620899684
申请日期
1962.06.05
申请人
SVENSKA DIAMANTBERGBORRNINGS AB
发明人
分类号
E21B25/02
主分类号
E21B25/02
代理机构
代理人
主权项
地址
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