Binder for loose leaf books,申请号US19360063485-传众专利搜索

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发明名称	Binder for loose leaf books
摘要
申请公布号	US2113840(A)	申请公布日期	1938.04.12
申请号	US19360063485	申请日期	1936.02.12
申请人	HEETER THOMAS E	发明人	HEETER THOMAS E.
分类号	B42F13/00	主分类号	B42F13/00
代理机构		代理人
主权项
地址

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