Improvements in book-rests,申请号GB19310022174-传众专利搜索

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发明名称	Improvements in book-rests
摘要
申请公布号	GB382335(A)	申请公布日期	1932.10.27
申请号	GB19310022174	申请日期	1931.08.05
申请人	HENRY ALBERT EDWARD WICKENS	发明人
分类号	A47B23/00	主分类号	A47B23/00
代理机构		代理人
主权项
地址

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