Improvements in or relating to phonograph device,申请号GB19550002859-传众专利搜索

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发明名称	Improvements in or relating to phonograph device
摘要
申请公布号	GB763930(A)	申请公布日期	1956.12.19
申请号	GB19550002859	申请日期	1955.01.31
申请人	THEODORE ROOSEVELT DUNCAN	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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