发明名称 Ladder Guard
摘要 A ladder guard secured between the rungs and stringers of the ladder to prevent use of the rungs as footholds or handholds and deter ascension of the ladder, especially by children. The ladder guard is constructed from compressible material of a desired resiliency allows an adult to deform the invention for insertion or removal between two adjacent stringers.
申请公布号 US2012312635(A1) 申请公布日期 2012.12.13
申请号 US201113158391 申请日期 2011.06.11
申请人 RANDOLPH SANDRA 发明人 RANDOLPH SANDRA
分类号 E06C7/00 主分类号 E06C7/00
代理机构 代理人
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