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公开(公告)号：US1604845A
公开(公告)日：1926-10-26
申请号：US74734624
申请日：1924-11-01
Applicant: KELLY MFG COMPANY
Inventor： MCKENNEY FREL Y
IPC: B01F3/12
CPC classification number: B01F3/1221 , Y10T137/2516
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