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发明名称
Unterwasserschallsender
摘要
申请公布号
DE674454(C)
申请公布日期
1939.04.14
申请号
DE1933S111629D
申请日期
1933.11.08
申请人
SIEMENS APPARATE UND MASCHINEN G.M.B.H.
发明人
STRECKER DR. FELIX
分类号
G10K11/30
主分类号
G10K11/30
代理机构
代理人
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地址
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