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1.发明授权
公开(公告)号：US3330802A
公开(公告)日：1967-07-11
申请号：US41721164
申请日：1964-12-09
Applicant: SNIA VISCOSA
Inventor： LUIGI CICERI , FELICE FARIOLI , ETTORE LUZZATTO
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公开(公告)号：US3315021A
公开(公告)日：1967-04-18
申请号：US46253765
申请日：1965-06-09
Applicant: SNIA VISCOSA
Inventor： ETTORE LUZZATTO
IPC: D01D5/34
CPC classification number: D01D5/34 , Y10S264/26
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