Самовращающееся запорное устройство для гидравлического вибратора,申请号SU19600662533-传众专利搜索

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发明名称	Самовращающееся запорное устройство для гидравлического вибратора
摘要
申请公布号	SU136278(A1)	申请公布日期	1960.11.30
申请号	SU19600662533	申请日期	1960.04.08
申请人		发明人	VOSKRESENSKIJ F.F.
分类号	E21B4/14	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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