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经营范围
发明名称
Microphone having a Variable Directional Characteristic
摘要
申请公布号
GB1181868(A)
申请公布日期
1970.02.18
申请号
GB19670033184
申请日期
1967.07.19
申请人
AKUSTISCHE U KINO-GERATE GESELLSCHAFT M.B.H.
发明人
分类号
H04R1/38
主分类号
H04R1/38
代理机构
代理人
主权项
地址
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