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公开(公告)号:US3019890A
公开(公告)日:1962-02-06
申请号:US72746658
申请日:1958-04-09
申请人: SASKATCHEWAN POTASH
发明人: KNILL RAYMOND R , LLOYD MCLAUGHLIN ASA , PRIESNITZ FREDERICK J , STEVENS CONDER LORY , HAWORTH RUSSELL G
CPC分类号: B65G21/10 , B65G21/04 , B65G21/06 , B65G21/14 , B65G2201/04