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经营范围
发明名称
A probe microphone
摘要
申请公布号
GB2232322(A)
申请公布日期
1990.12.05
申请号
GB19900011191
申请日期
1990.05.18
申请人
* AKTIESELSKABET BRUEL & KJAER
发明人
ERLING * FREDERIKSEN;OLE * SCHULTZ
分类号
H04R1/42;H04R1/08;H04R1/22;H04R19/04
主分类号
H04R1/42
代理机构
代理人
主权项
地址
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