Loose-leaf binder,申请号US19380241621-传众专利搜索

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发明名称	Loose-leaf binder
摘要
申请公布号	US2311492(A)	申请公布日期	1943.02.16
申请号	US19380241621	申请日期	1938.11.21
申请人	WILSON-JONES COMPANY	发明人	UNGER PAUL O.
分类号	B42F13/28	主分类号	B42F13/28
代理机构		代理人
主权项
地址

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