Improvements in graining composition,申请号GB19290014032-传众专利搜索

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发明名称	Improvements in graining composition
摘要
申请公布号	GB315214(A)	申请公布日期	1930.03.27
申请号	GB19290014032	申请日期	1929.05.06
申请人	E.I. DU PONT DE NEMOURS AND CO.	发明人
分类号	B44F9/02	主分类号	B44F9/02
代理机构		代理人
主权项
地址

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