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发明名称
Shields for antennas of borehole logging devices
摘要
申请公布号
USRE32913(E)
申请公布日期
1989.04.25
申请号
US19870076635
申请日期
1987.07.23
申请人
发明人
分类号
G01V3/30;H01Q1/52
主分类号
G01V3/30
代理机构
代理人
主权项
地址
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