Ключ для труб и буровых штанг,申请号SU19470354054-传众专利搜索

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发明名称	Ключ для труб и буровых штанг
摘要
申请公布号	SU71676(A1)	申请公布日期	1947.11.30
申请号	SU19470354054	申请日期	1947.04.18
申请人	MOLCHANOV G.V.	发明人	MOLCHANOV G.V.
分类号	E21B19/16;B25B15/00	主分类号	E21B19/16
代理机构		代理人
主权项
地址

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