Pen or pencil attachment,申请号US19290388238-传众专利搜索

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发明名称	Pen or pencil attachment
摘要
申请公布号	US1789737(A)	申请公布日期	1931.01.20
申请号	US19290388238	申请日期	1929.08.24
申请人	FRIEDEL JR JOHN	发明人	JR. JOHN FRIEDEL,
分类号	B43K3/02	主分类号	B43K3/02
代理机构		代理人
主权项
地址

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