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发明名称
Safety core-sampling apparatus
摘要
申请公布号
US3187824(A)
申请公布日期
1965.06.08
申请号
US19610088361
申请日期
1961.02.10
申请人
ELECTRICITE DE FRANCE
发明人
GAUBAN DANIEL
分类号
E21B49/06;G21C17/02;G21C19/10
主分类号
E21B49/06
代理机构
代理人
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地址
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