Improvements in or relating to ball point pens,申请号GB19550028423-传众专利搜索

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发明名称	Improvements in or relating to ball point pens
摘要
申请公布号	GB785253(A)	申请公布日期	1957.10.23
申请号	GB19550028423	申请日期	1955.10.05
申请人	FRIEDRICH GRUBE	发明人
分类号	B43K7/02;B43K7/12	主分类号	B43K7/02
代理机构		代理人
主权项
地址

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