ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,920, issued on Jan. 27, was assigned to UNILIN BV (Wielsbeke, Belgium).
"Floor or wall covering" was invented by Jan De Rick (Geraardsbergen, Belgium) and Bryan Rollier (Kanegem, Belgium).
According to the abstract* released by the U.S. Patent & Trademark Office: "A recess is provided at the surface of a floor or wall covering between two panels mechanically coupled to each other by a male coupling part and a female coupling part. The recess may include a first recess cut out or otherwise provided at the female edge through the top layer and extending into the substrate. The recess may have a second recess cut out or otherwise provided at the male edge through the top layer and e...