COROA CORTANTE ROTATIVA DE PERFURACAO DE ARRASTO, PROCESSO PARA PERFURACAO OU OBTENCAO DE TESTEMUNHOS GEOLOGICOS E ELEMENTO, DE CORTE ROTATIVO,申请号BR19830000813-传众专利搜索

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发明名称	COROA CORTANTE ROTATIVA DE PERFURACAO DE ARRASTO, PROCESSO PARA PERFURACAO OU OBTENCAO DE TESTEMUNHOS GEOLOGICOS E ELEMENTO, DE CORTE ROTATIVO
摘要
申请公布号	BR8300813(A)	申请公布日期	1983.11.16
申请号	BR19830000813	申请日期	1983.02.18
申请人	UNICORN INDUSTRIES PLC.	发明人	ALFRED JAMES GRAINGER
分类号	E21B10/12;E21B10/18;E21B10/20;E21B10/22;E21B10/50;E21B10/56;E21B10/567;(IPC1-7):E21B10/02	主分类号	E21B10/12
代理机构		代理人
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