Manufacture of metal writing pens,申请号US19390292936-传众专利搜索

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发明名称	Manufacture of metal writing pens
摘要
申请公布号	US2320369(A)	申请公布日期	1943.06.01
申请号	US19390292936	申请日期	1939.08.31
申请人	THE ESTERBROOK STEEL PEN MANUFACTURING CO.	发明人	LONGMAID SYDNEY E.
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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