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公开(公告)号：US2494416A
公开(公告)日：1950-01-10
申请号：US58643645
申请日：1945-04-03
Applicant: CIBA LTD
Inventor： FRITZ STRAUB , WALTHER HANHART , EMIL MANNHART
IPC: C09B35/00
CPC classification number: C09B35/00
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