An improved drilling fluid for use in well drilling,申请号GB19450002730-传众专利搜索

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发明名称	An improved drilling fluid for use in well drilling
摘要
申请公布号	GB591825(A)	申请公布日期	1947.08.29
申请号	GB19450002730	申请日期	1945.02.02
申请人	SHELL DEVELOPMENT COMPANY	发明人
分类号	C09K8/32	主分类号	C09K8/32
代理机构		代理人
主权项
地址

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