Improvements in and connected with sound boxes for gramophones and the like,申请号GB19290030240-传众专利搜索

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发明名称	Improvements in and connected with sound boxes for gramophones and the like
摘要
申请公布号	GB340054(A)	申请公布日期	1930.12.24
申请号	GB19290030240	申请日期	1929.10.05
申请人	WILLIAM ARMSTRONG HENDERSON	发明人
分类号	H04R7/00	主分类号	H04R7/00
代理机构		代理人
主权项
地址

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