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公开(公告)号：US2543322A
公开(公告)日：1951-02-27
申请号：US1766648
申请日：1948-03-29
Applicant: GOSLIN BIRMINGHAM MFG COMPANY
Inventor： LITTLE JOHN W , KELLEY JOSEPH W
IPC: B01D1/26
CPC classification number: B01D1/26
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