ALEXANDRIA, Va., June 5 -- United States Patent no. 12,274,928, issued on April 15, was assigned to 9297-5531 Quebec Inc. (Blainville, Canada).
"Rebound wall" was invented by Jean-Francois Grou (Blainville, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "There is described a rebound wall to be positioned with respect to a playing surface having an activity area and configured for varying a rebound of a ball directed thereon, the rebound wall comprising: a wall having a rebound surface and adapted to be positioned vertically relative to the playing surface so that the rebound surface substantially faces the activity area; the rebound surface comprising a plurality of impact zones each for returning the ...