A method of making pen nibs,申请号GB19420016712-传众专利搜索

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发明名称	A method of making pen nibs
摘要
申请公布号	GB551879(A)	申请公布日期	1943.03.12
申请号	GB19420016712	申请日期	1941.03.05
申请人	JOHN ANDREW SHEA	发明人
分类号	B21D53/76	主分类号	B21D53/76
代理机构		代理人
主权项
地址

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