Excavating head having large-diameter hydraulic hammer and excavating method using the same,申请号KR20090130545-传众专利搜索

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发明名称	Excavating head having large-diameter hydraulic hammer and excavating method using the same
摘要
申请公布号	KR101183445(B1)	申请公布日期	2012.09.17
申请号	KR20090130545	申请日期	2009.12.24
申请人		发明人
分类号	E21B1/26	主分类号	E21B1/26
代理机构		代理人
主权项
地址

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