ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,889, issued on Dec. 30.
"Panelized wall installation cart" was invented by William D McDonald (Santa Rosa, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A panelized wall transportation and installation cart is provided comprising a horizontally disposed rectangular cart frame assembly having wheels fixed to the bottom of the frame. The cart frame assembly further comprises a front and rear sections, the rear section being slidably received by the front section thereby facilitating adjustment of the length of the base frame. The cart has panel guide rails with panel clamps fixed to the top of the rails. The panel rails being rotatable around ...