AN ARTIFICIAL ECHO DEVICE,申请号GB19710026407-传众专利搜索

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发明名称	AN ARTIFICIAL ECHO DEVICE
摘要
申请公布号	GB1278227(A)	申请公布日期	1972.06.21
申请号	GB19710026407	申请日期	1971.04.19
申请人	AKG AKUSTISCHE U. KINOGERATE GESELLSCHAFT M.B.H.	发明人
分类号	G10K15/10	主分类号	G10K15/10
代理机构		代理人
主权项
地址

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