Установка для рытья цилиндрических колодцев,申请号SU19480388597-传众专利搜索

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发明名称	Установка для рытья цилиндрических колодцев
摘要
申请公布号	SU77970(A1)	申请公布日期	1949.11.30
申请号	SU19480388597	申请日期	1948.12.15
申请人	RUBAN A.G.	发明人	RUBAN A.G.
分类号	E21D1/06;E02F5/20;E02F5/24	主分类号	E21D1/06
代理机构		代理人
主权项
地址

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