SOIL DISPLACEMENT HAMMER WITH REVERSING MECHANISM,申请号EP19910911482-传众专利搜索

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发明名称	SOIL DISPLACEMENT HAMMER WITH REVERSING MECHANISM
摘要
申请公布号	EP0531439(B1)	申请公布日期	1996.04.17
申请号	EP19910911482	申请日期	1991.06.05
申请人	KAYES, ALLAN GEORGE	发明人	KAYES, ALLAN GEORGE
分类号	E21B4/14;E21B34/12;(IPC1-7):E21B4/14	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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