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公开(公告)号：US2595291A
公开(公告)日：1952-05-06
申请号：US72517847
申请日：1947-01-30
Applicant: RAMSEY THOMAS B , GRAY ELDON S
Inventor： RAMSEY THOMAS B , GRAY ELDON S
CPC classification number: E05F15/44 , E05F15/42 , E05F15/635 , E05Y2201/434 , E05Y2201/722 , E05Y2400/20 , E05Y2400/658 , E05Y2600/46 , E05Y2900/132
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