Pen nib alloy,申请号US19500175025-传众专利搜索

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发明名称	Pen nib alloy
摘要
申请公布号	US2681276(A)	申请公布日期	1954.06.15
申请号	US19500175025	申请日期	1950.07.20
申请人	THE ESTERBROOK PEN COMPANY	发明人	BLALOCK JOHN M.
分类号	B43K1/00;C22C19/05	主分类号	B43K1/00
代理机构		代理人
主权项
地址

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