LUBRICATING OIL EXTRACTION,申请号CAD379930-传众专利搜索

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发明名称	LUBRICATING OIL EXTRACTION
摘要
申请公布号	CA379930(A)	申请公布日期	1939.03.07
申请号	CAD379930	申请日期
申请人	SHELL DEVELOPMENT COMPANY	发明人	EGON EICHWALD
分类号		主分类号
代理机构		代理人
主权项
地址

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