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1.发明专利
公开(公告)号：BE620665R
公开(公告)日：1963-01-25
申请号：BE620665
申请日：1962-07-25
Applicant: BASF AG
Inventor： LOUIS GERD , WIPPEL GUENTER , LANGE GUENTER , WILHELM HANS , WEIDINGER HANS
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