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经营范围
发明名称
ACOUSTIC ATTENUATORS WITH ACTIVE SOUND CANCELLING
摘要
申请公布号
GB2088951(B)
申请公布日期
1984.08.22
申请号
GB19810032854
申请日期
1981.10.30
申请人
LORD CORP
发明人
分类号
F01N1/00;F16L55/02;G10K11/178;H03H21/00;(IPC1-7):F01N1/06
主分类号
F01N1/00
代理机构
代理人
主权项
地址
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