ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,833, issued on Dec. 16, was assigned to Hultafors Group AB (Gothenburg, Sweden).
"Means for collapsible step ladder" was invented by Rikard Mattsson (Aneby, Sweden).
According to the abstract* released by the U.S. Patent & Trademark Office: "A collapsible step ladder (1) comprising a first and a second ladder leg (2, 3) where the legs (2, 3) are hingedly connected to each other in one end. Each of the ladder legs (2, 3) comprising comprises at least one ladder section (4a-c), and where said at least one section (4a-c) comprises two tube portions (6, 7) arranged parallel to each other and interconnected at one end by a rung (8) to form a U-shaped ladder section, wherein said at le...