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公开(公告)号:EP0304496A4
公开(公告)日:1989-02-02
申请号:EP88902612
申请日:1988-03-02
发明人: LIPUKHIN JURY VIKTOROVICH PL M , GARBER EDUARD ALEXANDROVICH UL , RUMAKO GENNADY NIKOLAEVICH , ORLOV BORIS YAKOVLEVICH , PONOSOV VIKTOR NIKOLAEVICH , NOVIKOV VLADIMIR MAKAROVICH
IPC分类号: B21B45/04 , B21B45/06 , B24B7/12 , B24B31/112
CPC分类号: B24B7/12 , B21B45/06 , B24B31/112