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公开(公告)号：DE1669754A1
公开(公告)日：1971-06-03
申请号：DE1669754
申请日：1968-02-14
Applicant: BASF AG
Inventor： BECKERLE WILHELM-FRIEDRICH , PETRI ROLF , SCHNEIDER WALTER DR , ERHARD ALFRED , REINHARD HANS DR
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