ALEXANDRIA, Va., Aug. 25 -- United States Patent no. 12,715,561, issued on Aug. 25, was assigned to HULLBOT PTY LTD (Rozelle, Australia).

"Systems for cleaning underwater structures" was invented by Thomas Loefler (Rozelle, Australia) and Karl Watfern (Rozelle, Australia).

According to the abstract* released by the U.S. Patent & Trademark Office: "A system for cleaning a structure arranged in a body of water. The system includes: a vehicle operable to move through the water and clean the structure; a tether connectable between the vehicle and a fixed position; a deployment mechanism securable relative to the structure and configured to move the vehicle into, and out of, the water; and a processing unit configured to communicate with the v...