Improvements in or relating to magnetic record tapes,申请号GB19480004260-传众专利搜索

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发明名称	Improvements in or relating to magnetic record tapes
摘要
申请公布号	GB651645(A)	申请公布日期	1951.04.04
申请号	GB19480004260	申请日期	1948.02.13
申请人	THE BRUSH DEVELOPMENT COMPANY	发明人
分类号	G11B5/633;G11B5/70	主分类号	G11B5/633
代理机构		代理人
主权项
地址

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