Well drilling apparatus and method,申请号GB19560036069-传众专利搜索

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发明名称	Well drilling apparatus and method
摘要
申请公布号	GB816845(A)	申请公布日期	1959.07.22
申请号	GB19560036069	申请日期	1956.11.26
申请人	MUD CONTROL LABORATORIES, INC.	发明人
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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