发明名称 Concrete frame lifting device and method to use
摘要 This invention will assist or allow an operator to easily lift a concrete frame panel into position without much risk of personal injury and with greater efficiency of time. A lifting bar is secured to a vertical frame member through openings in the vertical frame members and a crane or forklift is used to lift the panel prior to setting it to form the wall.
申请公布号 US8002240(B1) 申请公布日期 2011.08.23
申请号 US20080126002 申请日期 2008.05.23
申请人 WILSON SR RICHARD M 发明人 WILSON, SR. RICHARD M.
分类号 B66F13/00 主分类号 B66F13/00
代理机构 代理人
主权项
地址