EXHAUST VALVE AND BIT ASSEMBLY FOR DOWN-HOLE PERCUSSIVE DRILLS,申请号KR20077027515-传众专利搜索

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发明名称	EXHAUST VALVE AND BIT ASSEMBLY FOR DOWN-HOLE PERCUSSIVE DRILLS
摘要
申请公布号	KR101009816(B1)	申请公布日期	2011.01.19
申请号	KR20077027515	申请日期	2006.04.27
申请人		发明人
分类号	B23Q5/033;E21B4/14	主分类号	B23Q5/033
代理机构		代理人
主权项
地址

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