REPLACEABLE CONVEYING SPIRAL FOR A DRILL BIT,申请号EP19860104843-传众专利搜索

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发明名称	REPLACEABLE CONVEYING SPIRAL FOR A DRILL BIT
摘要
申请公布号	EP0201724(A3)	申请公布日期	1987.09.30
申请号	EP19860104843	申请日期	1986.04.09
申请人	HAWERA PROBST GMBH + CO.	发明人	MULLER, NORBERT, DIPL.-ING.;MOSER, BERNHARD
分类号	B21C37/26;E21B17/22;(IPC1-7):E21B17/22	主分类号	B21C37/26
代理机构		代理人
主权项
地址

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