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公开(公告)号：DD246669A3
公开(公告)日：1987-06-17
申请号：DD27322185
申请日：1985-02-13
Applicant: FOTOCHEM WERKE BERLIN VEB
Inventor： NEST WOLFHARD , KIESSLING EKKEHART , UNGER HELMUT , ALLIES MANFRED
IPC: B01F5/00
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