étançon métallique pour mines,申请号FRD997068-传众专利搜索

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发明名称	étançon métallique pour mines
摘要
申请公布号	FR997068(A)	申请公布日期	1951.12.31
申请号	FRD997068	申请日期	1949.10.10
申请人		发明人	GORGEN OSCAR
分类号	E21D15/20	主分类号	E21D15/20
代理机构		代理人
主权项
地址

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