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公开(公告)号：US3047541A
公开(公告)日：1962-07-31
申请号：US75326658
申请日：1958-08-05
Applicant: INVENTA AG
Inventor： KASPAR RYFFEL , ERNST SCHWEIZER
CPC classification number: C08G69/16 , D01F6/60 , Y10S264/56
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