SOIL DISPLACEMENT HAMMER,申请号GB19880007359-传众专利搜索

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发明名称	SOIL DISPLACEMENT HAMMER
摘要
申请公布号	GB8807359(D0)	申请公布日期	1988.04.27
申请号	GB19880007359	申请日期	1988.03.28
申请人	KAYES, A G	发明人
分类号	E21B4/14;E21B7/06;E21B7/26	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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