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发明名称
摘要
申请公布号	CH681549(A5)	申请公布日期	1993.04.15
申请号	CH19900000523	申请日期	1990.02.19
申请人	TERRA AG FUER TIEFBAUTECHNIK	发明人	JENNE, DIETMAR
分类号	E02D7/10;E21B4/14	主分类号	E02D7/10
代理机构		代理人
主权项
地址

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