Improvements relating to ball point pens,申请号GB19540019500-传众专利搜索

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发明名称	Improvements relating to ball point pens
摘要
申请公布号	GB772744(A)	申请公布日期	1957.04.17
申请号	GB19540019500	申请日期	1954.07.02
申请人	ERNST JOHAN JENS HENRIKSEN	发明人
分类号	B43K7/08	主分类号	B43K7/08
代理机构		代理人
主权项
地址

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