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公开(公告)号：FR2668762A1
公开(公告)日：1992-05-07
申请号：FR9113628
申请日：1991-11-05
Applicant: DEGUSSA
Inventor： WERNER HARTMANN , MARTIN KADNER , RUDOLF SCHWARZ , PETER KLEINSCHMIT , EGBERT BRANDAU , HANS HUSCHKA
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