ALEXANDRIA, Va., April 9 -- United States Patent no. 12,270,158, issued on April 8, was assigned to CARPET TRACK LTD (Great Britain).

"Light railway system" was invented by Christopher Holden (Forres, Great Britain).

According to the abstract* released by the U.S. Patent & Trademark Office: "A light railway system comprising two parallel rails (12) each having a base portion (14) with a flat bottom, an upward-extending web (15), and a railhead (16), and resting within a respective trough structure (20). The trough structure (20) comprising multiple trough units (22) arranged end to end, with blocks (24, 26) that fit between the web (15) of the rail (12) and side portions of the trough unit (22) so as to locate the rail (12) within the tro...