ALEXANDRIA, Va., Sept. 15 -- United States Patent no. 12,735,947, issued on Sept. 15, was assigned to Nova Dynamics LLC (Philomath, Ore.).

"Robotic hydro-excavation devices" was invented by Thomas Jedidiah Sullivan (Philomath, Ore.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Hydro-excavation devices are configured to facilitate a trenchless and non-invasive method of installing a conduit underground. The hydro-excavation devices are configured to be operatively coupled to a pressurized water supply and to utilize pressurized water from the pressurized water supply to excavate a tunnel and pull a conduit into the tunnel. The hydro-excavation devices comprise a nozzle that is configured to be operatively co...