Disc drill bit,申请号EP19910810866-传众专利搜索

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发明名称	Disc drill bit
摘要
申请公布号	EP0534037(B1)	申请公布日期	1998.06.03
申请号	EP19910810866	申请日期	1991.11.11
申请人	NORVIC S.A.	发明人	KAALSTADT, OSCAR W.
分类号	B28D1/14;E02F3/20;E21B10/04;E21B10/06;E21B10/08;E21B10/12;E21B10/16;E21B10/18;E21B10/20;E21B10/22;E21B10/52;E21B10/56;E21B17/10;(IPC1-7):E21B10/12	主分类号	B28D1/14
代理机构		代理人
主权项
地址

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