Drilling well and well drilling fluid,申请号US19340732353-传众专利搜索

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发明名称	Drilling well and well drilling fluid
摘要
申请公布号	US1999147(A)	申请公布日期	1935.04.23
申请号	US19340732353	申请日期	1934.06.25
申请人	GULF RESEARCH & DEVELOPMENT CORPORATION	发明人	AMBROSE HENRY A.;LOOMIS ALBERT G.
分类号	C09K8/22	主分类号	C09K8/22
代理机构		代理人
主权项
地址

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