ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,890, issued on Feb. 3, was assigned to Bomac Engineering Pty Ltd. (Hallam, Australia).
"Rail-and-trolley systems" was invented by Tate McFarlane (Hallam, Australia).
According to the abstract* released by the U.S. Patent & Trademark Office: "Disclosed is a system or kit for forming an assembly comprising a rail trolley engageable with a rail to be moveable therealong, the system or kit comprising: at least one portion which a body of the trolley is to comprise ("body portion"), the body portion(s) being configured to define at least one slot in said body; and one or more wheels connectable or connected to at least one said body portion, or connectable to said body, the system or k...