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发明名称
Neerlaatbare echoloodinstallatie.
摘要
申请公布号
NL231991(A)
申请公布日期
1964.01.27
申请号
NL19580231991
申请日期
1958.10.06
申请人
ELECTROACUSTIC GMBH
发明人
分类号
B63B45/08;G10K11/35
主分类号
B63B45/08
代理机构
代理人
主权项
地址
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