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发明名称
Simultaneous preformed beam transmitting transducer system
摘要
申请公布号
US3311869(A)
申请公布日期
1967.03.28
申请号
US19650449903
申请日期
1965.04.21
申请人
KLUND WILLIAM E
发明人
KLUND WILLIAM E.
分类号
G01S1/72;G10K11/34
主分类号
G01S1/72
代理机构
代理人
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地址
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