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公开(公告)号：US2690908A
公开(公告)日：1954-10-05
申请号：US27086252
申请日：1952-02-09
Applicant: COIT VERNON E
Inventor： COIT VERNON E
IPC: E05F15/16
CPC classification number: E05F15/686 , E05Y2201/646 , E05Y2900/106
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