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公开(公告)号：US3327037A
公开(公告)日：1967-06-20
申请号：US32052763
申请日：1963-10-31
Applicant: SNIA VISCOSA
Inventor： ATTILIO PALVARINI , ANGELO BRESCIANI
IPC: D01F6/08
CPC classification number: D01F6/10
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