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发明名称	étançon de mine
摘要
申请公布号	FR1133974(A)	申请公布日期	1957.04.04
申请号	FRD1133974	申请日期	1955.06.24
申请人		发明人	STEINKOPF WILHELM
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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