Book mark and page holding device,申请号US19580764584-传众专利搜索

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发明名称	Book mark and page holding device
摘要
申请公布号	US2989023(A)	申请公布日期	1961.06.20
申请号	US19580764584	申请日期	1958.10.01
申请人	ELLINGSEN FLORENCE G	发明人	ELLINGSEN FLORENCE G.
分类号	B42D3/14	主分类号	B42D3/14
代理机构		代理人
主权项
地址

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