Control means for well drilling equipments,申请号US19330700314-传众专利搜索

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发明名称	Control means for well drilling equipments
摘要
申请公布号	US2005877(A)	申请公布日期	1935.06.25
申请号	US19330700314	申请日期	1933.11.29
申请人	WESTINGHOUSE ELECTRIC & MANUFACTURING COMPANY	发明人	STONE MORRIS;BAUDRY RENE
分类号	E21B19/08	主分类号	E21B19/08
代理机构		代理人
主权项
地址

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