Improvements in or relating to sound reproducing apparatus,申请号GB19370035066-传众专利搜索

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发明名称	Improvements in or relating to sound reproducing apparatus
摘要
申请公布号	GB493586(A)	申请公布日期	1938.10.11
申请号	GB19370035066	申请日期	1937.12.17
申请人	JOSEPH LOUIS ROUTIN	发明人
分类号	G11B27/13	主分类号	G11B27/13
代理机构		代理人
主权项
地址

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