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公开(公告)号：DE1767630A1
公开(公告)日：1972-03-02
申请号：DE1767630
申请日：1968-05-30
Applicant: BASF AG
Inventor： OETTINGER WILLI DR , SAUM WALTER DR , WOLF WILLI DIPL-ING DR , STARKE KLAUS DIPL-ING
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