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公开(公告)号：US2584874A
公开(公告)日：1952-02-05
申请号：US10315349
申请日：1949-07-05
Applicant: JOHN WIDDICOMB COMPANY
Inventor： WILLIAM HAAS
CPC classification number: E06B3/922 , E05D15/0682 , E05D15/08 , E05F2017/007 , E05Y2201/602 , E05Y2201/684 , E05Y2800/672 , E05Y2900/20 , E06B3/4663 , Y10T16/361 , Y10T16/37
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