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公开(公告)号：US2553375A
公开(公告)日：1951-05-15
申请号：US18928750
申请日：1950-10-09
Applicant: NAPHTOL CHEMIE OFFENBACH
Inventor： WERNER KIRST
IPC: D06P3/30
CPC classification number: D06P3/3075
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