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发明名称
Borehole temperature measuring device
摘要
申请公布号
US2213802(A)
申请公布日期
1940.09.03
申请号
US19380247749
申请日期
1938.12.27
申请人
SHELL DEVELOPMENT COMPANY
发明人
HUGEL HELMUT
分类号
E21B47/06
主分类号
E21B47/06
代理机构
代理人
主权项
地址
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