étai métallique de mine,申请号FRD1123196-传众专利搜索

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发明名称	étai métallique de mine
摘要
申请公布号	FR1123196(A)	申请公布日期	1956.09.18
申请号	FRD1123196	申请日期	1955.05.02
申请人		发明人	GERLACH HANS;GERLACH KARL
分类号	E21D15/52	主分类号	E21D15/52
代理机构		代理人
主权项
地址

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