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经营范围
发明名称
System for sound ranging
摘要
申请公布号
US2435253(A)
申请公布日期
1948.02.03
申请号
US19430476244
申请日期
1943.02.17
申请人
SUBMARINE SIGNAL COMPANY
发明人
JR. EDWIN E. TURNER,
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
地址
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