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公开(公告)号：US1754548A
公开(公告)日：1930-04-15
申请号：US28627328
申请日：1928-06-18
Applicant: DEXTER COMPANY
Inventor： DUNN IRVING H
IPC: D06F13/02
CPC classification number: D06F13/02 , Y10T74/1848
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