étançon en acier pour mines,申请号FRD1071004-传众专利搜索

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发明名称	étançon en acier pour mines
摘要
申请公布号	FR1071004(A)	申请公布日期	1954.08.24
申请号	FRD1071004	申请日期	1949.12.13
申请人	RINGFEDER G.M.B.H.	发明人
分类号	E21D15/32	主分类号	E21D15/32
代理机构		代理人
主权项
地址

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