发明名称 Safety rail for roofing; method of use and of manufacture
摘要 A safety rail for use by roofers is disclosed. The rail is light in weight, high in strength and durability, and can be installed relatively quickly.
申请公布号 US2006237263(A1) 申请公布日期 2006.10.26
申请号 US20050147058 申请日期 2005.06.07
申请人 GAINES MELVIN 发明人 GAINES MELVIN
分类号 E04G3/32 主分类号 E04G3/32
代理机构 代理人
主权项
地址