Improvements in or relating to phonographs,申请号GB19570033107-传众专利搜索

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发明名称	Improvements in or relating to phonographs
摘要
申请公布号	GB898436(A)	申请公布日期	1962.06.06
申请号	GB19570033107	申请日期	1957.10.23
申请人	HANS CHRISTIAN HANSEN	发明人
分类号	G11B3/085	主分类号	G11B3/085
代理机构		代理人
主权项
地址

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