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公开(公告)号：US2816432A
公开(公告)日：1957-12-17
申请号：US53963955
申请日：1955-10-10
Applicant: BEAUREGARD HORACE A
Inventor： BEAUREGARD HORACE A
IPC: E05B37/08
CPC classification number: E05B37/08 , Y10T70/5531 , Y10T70/7362
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