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经营范围
发明名称
Radio position determining system
摘要
申请公布号
US2513315(A)
申请公布日期
1950.07.04
申请号
US19470778794
申请日期
1947.10.09
申请人
SEISMOGRAPH SERVICE CORPORATION
发明人
HAWKINS JAMES E.
分类号
G01S1/30
主分类号
G01S1/30
代理机构
代理人
主权项
地址
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