COMBINED LARGE-DIAMETER AND BLAST HOLE DRILLING DEVICE,申请号EP19850100374-传众专利搜索

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发明名称	COMBINED LARGE-DIAMETER AND BLAST HOLE DRILLING DEVICE
摘要
申请公布号	EP0153567(B1)	申请公布日期	1988.04.06
申请号	EP19850100374	申请日期	1985.01.16
申请人	SALZGITTER MASCHINEN UND ANLAGEN AKTIENGESELLSCHAFT	发明人	KESSLER, ERHARD;SCHOLPEN, ERNST
分类号	E21B7/02;E21D9/00;(IPC1-7):E21C11/00	主分类号	E21B7/02
代理机构		代理人
主权项
地址

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