ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,426,723, issued on Sept. 30, was assigned to Wonderland Switzerland AG (Steinhausen, Switzerland).
"Playpen" was invented by Andrew J. Taylor (Mohnton, Pa.), Daniel A. Sack (Pottstown, Pa.), Patrick J. G. Bowers (Hockessin, Del.) and Curtis M. Hartenstine (Birdsboro, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A playpen includes an upper frame assembly having an unfolded and a folded state, a standing leg rotatable relative to the upper frame assembly between a folded and an unfolded position, a first locking mechanism for locking the standing leg in the unfolded position, and a second locking mechanism for locking the upper frame assembly in th...