Method of developing oil fields,申请号US19250044915-传众专利搜索

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发明名称	Method of developing oil fields
摘要
申请公布号	US1787972(A)	申请公布日期	1931.01.06
申请号	US19250044915	申请日期	1925.07.20
申请人	DOHERTY HENRY L	发明人	DOHERTY HENRY L.
分类号	E21B43/18	主分类号	E21B43/18
代理机构		代理人
主权项
地址

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