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公开(公告)号：US2530566A
公开(公告)日：1950-11-21
申请号：US66633446
申请日：1946-05-01
Applicant: ART METAL CONSTRUCTION CO
Inventor： CLARK FLOYD H , HAGER BENGT M , LARSON OSCAR J
IPC: A47B63/06
CPC classification number: A47B63/065 , Y10T74/20894
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