An appliance for sharpening non-metallic gramophone and pick-up needles,申请号GB19480014112-传众专利搜索

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发明名称	An appliance for sharpening non-metallic gramophone and pick-up needles
摘要
申请公布号	GB646405(A)	申请公布日期	1950.11.22
申请号	GB19480014112	申请日期	1948.05.25
申请人	WILLIAM CROCKFORD DENNIS	发明人
分类号	B24B19/16	主分类号	B24B19/16
代理机构		代理人
主权项
地址

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