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经营范围
发明名称
ACOUSTIC SYSTEMS
摘要
申请公布号
GB8611534(D0)
申请公布日期
1986.06.18
申请号
GB19860011534
申请日期
1986.05.12
申请人
FARR LTD, A E
发明人
分类号
E01F8/02;G10K11/16
主分类号
E01F8/02
代理机构
代理人
主权项
地址
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