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公开(公告)号：IN179939B
公开(公告)日：1997-12-27
申请号：IN596CA1994
申请日：1994-07-26
Applicant: DEGUSSA
Inventor： ESCH HEINZ , KUHLMANN ROBERT , NEUMULLER MATTHIAS , OTTO KAREN DR , RAUSCH RALF DR
IPC: C01B33/187
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