ALEXANDRIA, Va., June 10 -- United States Patent no. 12,291,865, issued on May 6.
"Wall-building element system and building element for use in the system" was invented by Frank Cato Lahti (Vardo, Norway).
According to the abstract* released by the U.S. Patent & Trademark Office: "Wall-building element system comprising sole elements, basic wall-building elements adapted to be assembled to a wall, and beams adapted to be fitted between each horizontal layer of the basic wall-building elements. The basic wall-building elements are prefabricated with a central, load bearing core member and form-stable layers of thermal insulation on both sides thereof. The core member and the thermal insulation layers are mutually adapted in a tongue-and-gr...