ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,559,948, issued on Feb. 24, was assigned to AHF LLC (Mountville, Pa.).

"Hooked tongue and groove locking arrangement for non-metallic flooring elements" was invented by John M. Whispell (Mountville, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The subject invention is directed to non-metallic flooring elements having a hooked-tongue and groove locking arrangement. Advantageously, the subject invention allows for horizontal interlocking, with no angled introduction needed. As a result, the same locking arrangement can be used for the sides and the ends of the flooring element. This allows for the use of two tools for manufacturing about the perimet...