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发明名称
Radio frequency surveying system
摘要
申请公布号
US2768374(A)
申请公布日期
1956.10.23
申请号
US19530358764
申请日期
1953.06.01
申请人
ESSO RESEARCH AND ENGINEERING COMPANY
发明人
JR. WILLIAM M. RUST,
分类号
G01S1/02;G01S19/44
主分类号
G01S1/02
代理机构
代理人
主权项
地址
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