发明名称 RETRACTABLE LADDER
摘要 A retractable ladder is in the form of a generally U-shaped member adapted for operative use in a vertical position and which may be stored in an inoperative position within the supporting body by lifting the bottom rung or step and pushing the ladder into the body. Optional stops are provided on the ladder for limiting its travel. Optional hand grip means are also provided.
申请公布号 US3826337(A) 申请公布日期 1974.07.30
申请号 US19730374474 申请日期 1973.06.28
申请人 CATERPILLAR TRACTOR CO,US 发明人 LIPTAK N,US;ECHERD B,US
分类号 E06C5/24;B60R3/02;(IPC1-7):B60R3/02 主分类号 E06C5/24
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