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公开(公告)号:EP0397875A4
公开(公告)日:1992-01-08
申请号:EP89902699
申请日:1989-06-08
发明人: MELING, KONSTANTIN VIKTOROVICH , SAFONOV, JURY ANATOLIEVICH , ABDRAKHMANOV, GABDRASHIT SULTANOVICH , MIKHAILIN, JURY GRIGORIEVICH , BOGOMOLOV, RODION MIKHAILOVICH , SALOMATIN, VALENTIN VASILIEVICH , MUKHAMETSHIN, ALMAZ ADGAMOVICH , MINGAZOV, SALIKHZYAN MUKHAMETZYANOVICH
CPC分类号: E21B43/105 , B21D41/02 , E21B29/10 , E21B43/103 , Y10T29/4994 , Y10T29/53652