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发明名称
ELECTROACOUSTIC TRANSDUCER
摘要
申请公布号
CA455398(A)
申请公布日期
1949.03.22
申请号
CAD455398
申请日期
申请人
SUBMARINE SIGNAL COMPANY;SUBMARINE SIGNAL COMPANY;RAYTHEON MANUFACTURING COMPANY
发明人
HUGO BENIOFF
分类号
主分类号
代理机构
代理人
主权项
地址
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