Loose leaf binder and sectional ring therefor,申请号US19350029813-传众专利搜索

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发明名称	Loose leaf binder and sectional ring therefor
摘要
申请公布号	US2088431(A)	申请公布日期	1937.07.27
申请号	US19350029813	申请日期	1935.07.05
申请人	LOOSE LEAF METALS COMPANY	发明人	NEWMAN GEORGE W.
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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