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公开(公告)号：US3280076A
公开(公告)日：1966-10-18
申请号：US28519963
申请日：1963-06-04
Applicant: SNIA VISCOSA
Inventor： ATTILIO PALVARINI , EZIO MERLUZZI , CESANO MADERNO , EDGARDO HORAK
IPC: C08G2/00
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