ALEXANDRIA, Va., Feb. 12 -- United States Patent no. 12,220,329, issued on Feb. 11, was assigned to Ossur Iceland ehf (Reykjavik, Iceland).

"Pump system" was invented by Hafsteinn Jonasson (Reykjavik, Iceland), Dadi Granz (Reykjavik, Iceland), Marco Steinberg (Reykjavik, Iceland) and David Sandahl (Reykjavik, Iceland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A prosthetic system includes a prosthetic foot having an upper foot element with a concave-forward facing portion and foot portion extending forwardly therefrom. An intermediate foot element is disposed below the upper foot element and has a front portion coupled to the foot portion of the upper foot element. A lower foot element is disposed below t...