ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,308, issued on July 14, was assigned to IND.I.A. S.P.A. (Malo, Italy).

"Device for locking panels or slabs with an improved structure" was invented by Dario Gonzato (Malo, Italy).

According to the abstract* released by the U.S. Patent & Trademark Office: "A device (10) for clamping panels and sheets comprises an extruded U-shaped profile. The profile comprises a base box (12) and first and second brackets (11) extending transversely from the base box. A plurality of polygonal slots (20) are formed within the brackets (11) and the base box (12). At least one of the slots (20) is filled with an additional material, such as an expansive cement mortar."

The patent was filed on Nov. ...