Rock drilling equipment,申请号US19630293760-传众专利搜索

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发明名称	Rock drilling equipment
摘要
申请公布号	US3277972(A)	申请公布日期	1966.10.11
申请号	US19630293760	申请日期	1963.07.09
申请人	ATLAS COPCO AKTIEBOLAG	发明人	LAGERSTROM GUNNAR
分类号	E21B10/64	主分类号	E21B10/64
代理机构		代理人
主权项
地址

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