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公开(公告)号：US2605772A
公开(公告)日：1952-08-05
申请号：US73810147
申请日：1947-03-29
Applicant: SWEETLAND DEV COMPANY
Inventor： SWEETLAND ERNEST J
CPC classification number: B60N3/083 , A24F19/14 , Y10T74/1555
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