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公开(公告)号：US2686577A
公开(公告)日：1954-08-17
申请号：US26945152
申请日：1952-02-01
Applicant: HOPPENJANS BERNARD J
Inventor： HOPPENJANS BERNARD J
IPC: E05F15/14
CPC classification number: E05F15/643 , E05Y2201/22 , E05Y2201/232 , E05Y2201/244 , E05Y2201/246 , E05Y2201/434 , E05Y2800/11 , E05Y2800/25 , E05Y2900/40 , Y10T70/65 , Y10T70/7124 , Y10T292/0836 , Y10T292/101
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