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公开(公告)号：US3325729A
公开(公告)日：1967-06-13
申请号：US29791563
申请日：1963-07-26
Applicant: BAYER AG
Inventor： BERNHARD VINZELBERG , KURT DRYCZYNSKI , GUNTHER KOEPKE , STEPHAN PLATZ , WERNER LESSNIG
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