Loose-leaf binder,申请号US19310537297-传众专利搜索

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发明名称	Loose-leaf binder
摘要
申请公布号	US1896667(A)	申请公布日期	1933.02.07
申请号	US19310537297	申请日期	1931.05.14
申请人	FRANZ JR CHARLES H	发明人	JR. CHARLES H. FRANZ,
分类号	B42F11/02	主分类号	B42F11/02
代理机构		代理人
主权项
地址

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