VIBRATORY DRILL APPARATUS,申请号GB19870000001-传众专利搜索

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发明名称	VIBRATORY DRILL APPARATUS
摘要
申请公布号	GB8700001(D0)	申请公布日期	1987.02.11
申请号	GB19870000001	申请日期	1987.01.02
申请人	WINK, F W	发明人
分类号	E21B7/24;E21B25/00	主分类号	E21B7/24
代理机构		代理人
主权项
地址

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