发明名称 Roof gripper
摘要 A bracing device capable of clamping to a rung ladder is disclosed. The bracing device holds the rung ladder in position when hooked over the peak of a pitched roof. At the forward end of the clamping device are wheels which allow the user to wheel the ladder up the pitched roof.
申请公布号 US7028809(B2) 申请公布日期 2006.04.18
申请号 US20040922145 申请日期 2004.08.20
申请人 DUDSCHUS DALLAS 发明人 DUDSCHUS DALLAS
分类号 E06C7/06 主分类号 E06C7/06
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