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公开(公告)号：US2772107A
公开(公告)日：1956-11-27
申请号：US30102552
申请日：1952-07-26
Applicant: H B IVES COMPANY
Inventor： WALTER YOUNGBERG
IPC: E05B63/24
CPC classification number: E05B63/244 , Y10T70/5376 , Y10T292/0934 , Y10T292/0959 , Y10T292/1092
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