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公开(公告)号：US3037903A
公开(公告)日：1962-06-05
申请号：US74812958
申请日：1958-07-14
Applicant: BASF AG
Inventor： HEINRICH BAUMANN , FRITZ GRAF , FRANZ POSCHMANN
CPC classification number: D21H21/54 , D21H17/47 , D21H21/22 , D21H21/52 , Y10S521/918
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