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发明名称
Einrichtung zur akustischen Richtungsbestimmung im dreidimensionalen Raum
摘要
申请公布号
DE550149(C)
申请公布日期
1932.05.07
申请号
DED550149D
申请日期
申请人
ELEKTROACUSTIC GESELLSCHAFT M. B. H.
发明人
分类号
G01S1/72
主分类号
G01S1/72
代理机构
代理人
主权项
地址
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