LOUDSPEAKER SYSTEM WITH ELECTRICAL FEED-BACK,申请号GB19770045288-传众专利搜索

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发明名称	LOUDSPEAKER SYSTEM WITH ELECTRICAL FEED-BACK
摘要
申请公布号	GB1595917(A)	申请公布日期	1981.08.19
申请号	GB19770045288	申请日期	1977.10.31
申请人	THOMSON-BRANDT	发明人
分类号	H04R3/04;H04R3/00;(IPC1-7):H04R3/04	主分类号	H04R3/04
代理机构		代理人
主权项
地址

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