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发明名称	étançon de mine
摘要
申请公布号	FR60553(E)	申请公布日期	1954.11.09
申请号	FRD60553	申请日期	1950.01.12
申请人		发明人	GERLACH HANS
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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