Improvements in and relating to loud speakers,申请号GB19310033873-传众专利搜索

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发明名称	Improvements in and relating to loud speakers
摘要
申请公布号	GB385418(A)	申请公布日期	1932.12.29
申请号	GB19310033873	申请日期	1931.12.07
申请人	THE MAGNAVOX COMPANY	发明人
分类号	H04R1/02;H04R9/02;H04R9/04	主分类号	H04R1/02
代理机构		代理人
主权项
地址

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