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发明名称
Vorrichtung zum gerichteten Senden und/oder Empfangen von Wasserschall
摘要
申请公布号
DE1033109(B)
申请公布日期
1958.06.26
申请号
DE1954E009502
申请日期
1954.09.06
申请人
ELECTROACUSTIC GESELLSCHAFT M.B.H.
发明人
LAPP KARL
分类号
G10K11/35
主分类号
G10K11/35
代理机构
代理人
主权项
地址
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