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公开(公告)号：US2820243A
公开(公告)日：1958-01-21
申请号：US50169255
申请日：1955-04-15
Applicant: JAMES GIBBONS LTD
Inventor： GIBBONS PAUL E
CPC classification number: E05F3/04 , E05F3/22 , E05F3/226 , E05Y2201/21 , E05Y2201/256 , E05Y2201/264 , E05Y2600/41 , E05Y2600/452 , E05Y2900/132 , Y10T16/5321
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