PROCESS AND DEVICE FOR THE CONTROLLED ADVANCING OF UNDER-GROUND PIPES IN INACCESIBLE CROSS-SECTIONAL AREAS,申请号DE19853560731-传众专利搜索

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发明名称	PROCESS AND DEVICE FOR THE CONTROLLED ADVANCING OF UNDER-GROUND PIPES IN INACCESIBLE CROSS-SECTIONAL AREAS
摘要
申请公布号	DE3560731(D1)	申请公布日期	1987.11.05
申请号	DE19853560731	申请日期	1985.03.28
申请人	WITTE BOHRTECHNIK GMBH	发明人	ENGLISCH, REINHOLD;BOSSE, CARL B.
分类号	E21B7/04;E21B7/20;E21B10/32;(IPC1-7):E21B7/20	主分类号	E21B7/04
代理机构		代理人
主权项
地址

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