ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,784, issued on Aug. 5.
"Two-way retractable building formwork apparatus" was invented by Chien-Ho Wang (Taichung, Taiwan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A two-way retractable building formwork apparatus includes a substrate module having a mounting surface, a first side bar mounted on one end of the mounting surface that extends along a first direction, a second side bar mounted on another end of the mounting surface that extends along a second direction transverse to the first direction and fixed to one end of the first side bar, a first retractable unit mounted on the mounting surface opposite to the first side bar and extendable alo...