Trépan de mine,申请号FRD1061444-传众专利搜索

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发明名称	Trépan de mine
摘要
申请公布号	FR1061444(A)	申请公布日期	1954.04.12
申请号	FRD1061444	申请日期	1952.08.13
申请人	GEBR. BOHLER & CO AKTIENGESELLSCHAFT	发明人
分类号	E21B10/40	主分类号	E21B10/40
代理机构		代理人
主权项
地址

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