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发明名称
Focusing system for use in radioactivity well logging
摘要
申请公布号
US2946889(A)
申请公布日期
1960.07.26
申请号
US19570652802
申请日期
1957.04.15
申请人
JERSEY PRODUCTION RESEARCH COMPANY
发明人
MUENCH NILS L.
分类号
G01V5/04
主分类号
G01V5/04
代理机构
代理人
主权项
地址
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