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发明名称
DIRECTIVITY DYNAMIC MICROPHONE UNIT
摘要
申请公布号
JPH04170200(A)
申请公布日期
1992.06.17
申请号
JP19900298016
申请日期
1990.11.01
申请人
MATSUSHITA ELECTRIC IND CO LTD
发明人
HOJO MASAYOSHI
分类号
H04R9/08;H04R1/22
主分类号
H04R9/08
代理机构
代理人
主权项
地址
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