METHOD OF LAYING PIPELINE UNDER OBSTACLE,申请号SU19762380398-传众专利搜索

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发明名称	METHOD OF LAYING PIPELINE UNDER OBSTACLE
摘要
申请公布号	SU621325(A3)	申请公布日期	1978.08.25
申请号	SU19762380398	申请日期	1976.07.13
申请人	TAJDRIL CORP (FIRMA)	发明人	MARTIN D.CHARRINGTON,US
分类号	E21D9/093;E02F5/18;E21B7/04;E21B7/20;E21B7/28;E21D9/06;F16L1/028;(IPC1-7):F16L1/02	主分类号	E21D9/093
代理机构		代理人
主权项
地址

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