BOREVERKTOEY FOR FREMSTILLING AV KRUMME PARTIER I BOREHULL,申请号NO19810002363-传众专利搜索

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发明名称	BOREVERKTOEY FOR FREMSTILLING AV KRUMME PARTIER I BOREHULL
摘要
申请公布号	NO812363(A)	申请公布日期	1982.01.13
申请号	NO19810002363	申请日期	1981.07.10
申请人	PREUSSAG AG,	发明人	STEENBOCK, ARNO,
分类号	E21B4/00;E21B4/02;E21B7/06;E21B7/08;E21B17/20;(IPC1-7):E21B/	主分类号	E21B4/00
代理机构		代理人
主权项
地址

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