Bookstand,申请号US19300423667-传众专利搜索

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发明名称	Bookstand
摘要
申请公布号	US1815304(A)	申请公布日期	1931.07.21
申请号	US19300423667	申请日期	1930.01.27
申请人	KRAG ERIK L	发明人	KRAG ERIK L.
分类号	A47B65/00	主分类号	A47B65/00
代理机构		代理人
主权项
地址

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