Drilling fluid for use in well-boring operations,申请号US19490127947-传众专利搜索

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发明名称	Drilling fluid for use in well-boring operations
摘要
申请公布号	US2607730(A)	申请公布日期	1952.08.19
申请号	US19490127947	申请日期	1949.11.17
申请人	STANDARD OIL DEVELOPMENT COMPANY	发明人	RAGLAND DOUGLAS
分类号	C09K8/20	主分类号	C09K8/20
代理机构		代理人
主权项
地址

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