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发明名称
REGISTRIERENDES ECHOLOTGERAET.
摘要
申请公布号
DE1717172(U)
申请公布日期
1956.02.16
申请号
DE195500E7820U
申请日期
1955.12.01
申请人
ELECTROACUSTIC GESELLSCHAFT M.B.H.
发明人
分类号
主分类号
代理机构
代理人
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