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公开(公告)号：US2777156A
公开(公告)日：1957-01-15
申请号：US25827151
申请日：1951-11-26
Applicant: WEISGARBER NORMAN A
Inventor： WEISGARBER NORMAN A
IPC: E05D3/02
CPC classification number: E05D3/022 , E05Y2201/638 , E05Y2900/20 , Y10T16/5448
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