Treatment of well-drilling fluids,申请号GB19450034140-传众专利搜索

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发明名称	Treatment of well-drilling fluids
摘要
申请公布号	GB605173(A)	申请公布日期	1948.07.16
申请号	GB19450034140	申请日期	1945.12.17
申请人	NATIONAL LEAD COMPANY	发明人
分类号	C09K8/14;C09K8/16	主分类号	C09K8/14
代理机构		代理人
主权项
地址

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