WELL-DRILLING TURBODRILL,申请号GB19750030002-传众专利搜索

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发明名称	WELL-DRILLING TURBODRILL
摘要
申请公布号	GB1498241(A)	申请公布日期	1978.01.18
申请号	GB19750030002	申请日期	1975.07.17
申请人	VNII BUROV TEKH	发明人
分类号	E21B4/02;(IPC1-7):F03B13/02;F03B11/06	主分类号	E21B4/02
代理机构		代理人
主权项
地址

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