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公开(公告)号：US2186396A
公开(公告)日：1940-01-09
申请号：US7253836
申请日：1936-04-03
Applicant: JOSEPH SULTAN
Inventor： JOSEPH SULTAN
IPC: D02G3/28
CPC classification number: D02G3/28 , D10B2201/20
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