SAFETY ASSEMBLY FOR LADDERS
作者： Torin Milton R
DOI:
关键词: Section (archaeology) 、 Bracket 、 Geology 、 Structural engineering
摘要: A safety assembly for ladders includes a pair of angled guide rails and hollow mounting brackets. Each bracket is configured to receive an end rail. rail has first section second connected the section. The sections are joined at angle ranging from about 155 degrees 168 degrees. length less than
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