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发明名称
Electrical prospecting
摘要
申请公布号
US2368218(A)
申请公布日期
1945.01.30
申请号
US19440566937
申请日期
1944.12.06
申请人
HAYES HARVEY C
发明人
HAYES HARVEY C.
分类号
G01V3/08
主分类号
G01V3/08
代理机构
代理人
主权项
地址
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