étançon métallique pour mines et exploitations analogues,申请号FRD62394-传众专利搜索

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发明名称	étançon métallique pour mines et exploitations analogues
摘要
申请公布号	FR62394(E)	申请公布日期	1955.06.14
申请号	FRD62394	申请日期	1952.01.22
申请人		发明人	SMAL GILLES
分类号	E21D15/28	主分类号	E21D15/28
代理机构		代理人
主权项
地址

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