Improvements in the manufacture and production of substances for colouring mineral oils,申请号GB19370036127-传众专利搜索

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发明名称	Improvements in the manufacture and production of substances for colouring mineral oils
摘要
申请公布号	GB508483(A)	申请公布日期	1939.06.30
申请号	GB19370036127	申请日期	1937.12.30
申请人	GEORGE WILLIAM JOHNSON	发明人
分类号	C10M171/00	主分类号	C10M171/00
代理机构		代理人
主权项
地址

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