PIPE JACKING EQUIPMENT,申请号GB19740053006-传众专利搜索

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发明名称	PIPE JACKING EQUIPMENT
摘要
申请公布号	GB1480640(A)	申请公布日期	1977.07.20
申请号	GB19740053006	申请日期	1975.12.08
申请人	M & H TUNNEL & CIVIL ENG LTD	发明人
分类号	E21B7/04;E21D9/00;(IPC1-7):E21D9/00	主分类号	E21B7/04
代理机构		代理人
主权项
地址

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