Method of producing lubricating oils,申请号US19310576663-传众专利搜索

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发明名称	Method of producing lubricating oils
摘要
申请公布号	US2048992(A)	申请公布日期	1936.07.28
申请号	US19310576663	申请日期	1931.11.23
申请人	THE PURE OIL COMPANY	发明人	CHITTICK MARTIN B.
分类号		主分类号
代理机构		代理人
主权项
地址

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