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公开(公告)号：US3512971A
公开(公告)日：1970-05-19
申请号：US3512971D
申请日：1967-08-29
Applicant: BASF AG
Inventor： FLOSS JOSEF GEORG , BAYERLEIN FRIEDRICH , BRODT RUDOLF , HENKLER HERBERT , STREHLER HUGO , WILHELM HANS , GEHM ROBERT
CPC classification number: G03F7/037 , Y10S430/114
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