CONICAL ENLARGEMENT IN DRILL HOLE,申请号AU19810070962-传众专利搜索

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发明名称	CONICAL ENLARGEMENT IN DRILL HOLE
摘要
申请公布号	AU536046(B2)	申请公布日期	1984.04.12
申请号	AU19810070962	申请日期	1981.05.22
申请人	HILTI AG	发明人	JURGEN KESSLER
分类号	E21B10/32	主分类号	E21B10/32
代理机构		代理人
主权项
地址

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