Improvements in or relating to gramophone records,申请号GB19460025692-传众专利搜索

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发明名称	Improvements in or relating to gramophone records
摘要
申请公布号	GB620604(A)	申请公布日期	1949.03.28
申请号	GB19460025692	申请日期	1946.08.28
申请人	WILLIAM EDWARD LORD	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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