Rock drill bit with helical conveying portion.,申请号EP19940810527-传众专利搜索

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发明名称	Rock drill bit with helical conveying portion.
摘要
申请公布号	EP0655547(A3)	申请公布日期	1995.11.08
申请号	EP19940810527	申请日期	1994.09.13
申请人	HILTI AKTIENGESELLSCHAFT	发明人	OBERMEIER, JOSEF
分类号	B23B51/02;B27G15/00;B28D1/14;E21B10/44;E21B10/46;(IPC1-7):E21B10/44	主分类号	B23B51/02
代理机构		代理人
主权项
地址

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