Foldable bookrest,申请号US19530365650-传众专利搜索

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发明名称	Foldable bookrest
摘要
申请公布号	US2691240(A)	申请公布日期	1954.10.12
申请号	US19530365650	申请日期	1953.07.02
申请人	HAROLD KRAUS	发明人	KRAUS HAROLD
分类号	A47B23/04	主分类号	A47B23/04
代理机构		代理人
主权项
地址

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