Improvements in or relating to deep drills,申请号GB19630007697-传众专利搜索

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发明名称	Improvements in or relating to deep drills
摘要
申请公布号	GB963670(A)	申请公布日期	1964.07.15
申请号	GB19630007697	申请日期	1963.02.26
申请人	AB SKANSKA CEMENTGJUTERIET	发明人
分类号	E21B7/20;E21B10/66;E21B17/10	主分类号	E21B7/20
代理机构		代理人
主权项
地址

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