ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,497,739, issued on Dec. 16.
"Gravel spreader" was invented by Harry J. Frauenfelder IV (Waldorf, Md.).
According to the abstract* released by the U.S. Patent & Trademark Office: "The gravel spreader includes a hopper with a pair of longitudinally opposed sidewalls, a pair of laterally opposed sidewalls, an open upper end and an open lower end. A pair of longitudinally-extending runners are respectively mounted on lower ends of the pair of laterally opposed sidewalls. In use, the gravel spreader is transported to a site for spreading of gravel by being releasably carried by a bucket of a tractor or the like. The gravel spreader is placed on a ground surface of the site for the spreadi...