Control system for oil well pumps,申请号US19510266366-传众专利搜索

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发明名称	Control system for oil well pumps
摘要
申请公布号	US2661697(A)	申请公布日期	1953.12.08
申请号	US19510266366	申请日期	1951.12.26
申请人	SHELL DEVELOPMENT COMPANY	发明人	LONG MARION V.;SCHNEIDER FREDERICK CARL
分类号	E21B43/12	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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