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经营范围
发明名称
AUTOMATIC VOLUME CONTROL APPARATUS
摘要
申请公布号
KR100868862(B1)
申请公布日期
2008.11.13
申请号
KR20070036888
申请日期
2007.04.16
申请人
发明人
分类号
H04R3/00
主分类号
H04R3/00
代理机构
代理人
主权项
地址
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