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公开(公告)号：US3208820A
公开(公告)日：1965-09-28
申请号：US14353361
申请日：1961-10-09
Applicant: HOECHST AG
Inventor： ULRICH SCHWENK , LUDWIG SCHLAFER , GUNTER MAU , MANFRED FORDERREUTHER , FRITZ HUBENETT
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