US Patent Issued to Keystone Retaining Wall Systems on Nov. 3 for "Segmented wall and landscaping block systems with lug processes" (Minnesota Inventors)

ALEXANDRIA, Va., Nov. 3 -- United States Patent no. 12,781,461, issued on Nov. 3, was assigned to Keystone Retaining Wall Systems LLC (Minneapolis).

"Segmented wall and landscaping block systems with lug processes" was invented by Robert John Lundell (Stillwater, Minn.) and John Walter Turgeon-Schramm (Watertown, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wall system includes a plurality of landscaping blocks, each comprising a front portion, a back portion, and first and second sidewall portions extending between the front portion and the back portion. An opening is provided, with a perimeter defined along inner surfaces of the front, back and first and second sidewall portions, respectively, an...