UN DISPOSITIVO DE PILAR DE SOSTENIMIENTO PARA LAS MINAS.,申请号ES19290003522-传众专利搜索

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发明名称	UN DISPOSITIVO DE PILAR DE SOSTENIMIENTO PARA LAS MINAS.
摘要
申请公布号	ES352229(A3)	申请公布日期	1969.06.16
申请号	ES19290003522	申请日期	1968.03.30
申请人	MARREL	发明人
分类号	E21D;(IPC1-7):21D/	主分类号	E21D
代理机构		代理人
主权项
地址

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