Improvements in and relating to loudspeakers,申请号GB19570011447-传众专利搜索

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发明名称	Improvements in and relating to loudspeakers
摘要
申请公布号	GB857076(A)	申请公布日期	1960.12.29
申请号	GB19570011447	申请日期	1957.04.08
申请人	CECIL E. WATTS LIMITED	发明人	WATTS CECIL ERNEST
分类号	H04R1/26	主分类号	H04R1/26
代理机构		代理人
主权项
地址

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