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公开(公告)号：US2577013A
公开(公告)日：1951-12-04
申请号：US5093448
申请日：1948-09-24
Applicant: B B CHEM CO
Inventor： HYDE BENJAMIN D
IPC: B65H23/028 , D06C3/00
CPC classification number: B65H23/028 , D06C3/00 , D06C2700/10
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