Устройство для промывки забоя скважины,申请号SU19600673653-传众专利搜索

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发明名称	Устройство для промывки забоя скважины
摘要
申请公布号	SU135843(A1)	申请公布日期	1960.11.30
申请号	SU19600673653	申请日期	1960.07.18
申请人		发明人	GUSMAN M.T.
分类号	E21B21/12;E21B4/02	主分类号	E21B21/12
代理机构		代理人
主权项
地址

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