Loose-leaf binder,申请号US19430504240-传众专利搜索

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发明名称	Loose-leaf binder
摘要
申请公布号	US2377179(A)	申请公布日期	1945.05.29
申请号	US19430504240	申请日期	1943.09.29
申请人	WILLIAM PITT	发明人	PITT WILLIAM
分类号	B42F13/26	主分类号	B42F13/26
代理机构		代理人
主权项
地址

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