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发明名称
ACOUSTIC RESISTANCES
摘要
申请公布号
GB2078044(B)
申请公布日期
1983.11.30
申请号
GB19810018613
申请日期
1981.06.17
申请人
BESSON A P LTD
发明人
分类号
G10K11/04;(IPC1-7):G10K11/02;B23P13/00;H04R1/28
主分类号
G10K11/04
代理机构
代理人
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