Раздвижная штанга для ударного бурения с промывкой,申请号SU19310108804-传众专利搜索

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发明名称	Раздвижная штанга для ударного бурения с промывкой
摘要
申请公布号	SU30214(A1)	申请公布日期	1933.05.31
申请号	SU19310108804	申请日期	1931.08.01
申请人	SHELOMOV N.I.	发明人	SHELOMOV N.I.
分类号	E21B17/07	主分类号	E21B17/07
代理机构		代理人
主权项
地址

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