Loose-leaf binder,申请号US19450571381-传众专利搜索

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发明名称	Loose-leaf binder
摘要
申请公布号	US2469922(A)	申请公布日期	1949.05.10
申请号	US19450571381	申请日期	1945.01.05
申请人	HUBBELL CLARENCE Z	发明人	HUBBELL CLARENCE Z.
分类号	B42F15/00	主分类号	B42F15/00
代理机构		代理人
主权项
地址

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