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经营范围
发明名称
Acoustic system
摘要
申请公布号
GB9005869(D0)
申请公布日期
1996.10.23
申请号
GB19900005869
申请日期
1990.03.15
申请人
ESTA LTD
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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