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发明名称	FRÄSWERZEUG
摘要
申请公布号	DE69421628(D1)	申请公布日期	1999.12.16
申请号	DE19946021628	申请日期	1994.07.29
申请人	WEATHERFORD U.S. INC., HOUSTON	发明人	BEAGRIE, KARL;SHUBERT, DAVID;CARTER, THURMAN
分类号	E21B7/06;E21B10/50;E21B10/60;E21B12/04;E21B23/00;E21B23/01;E21B23/02;E21B29/06;E21B49/06;(IPC1-7):E21B29/06	主分类号	E21B7/06
代理机构		代理人
主权项
地址

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