ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,429, issued on Nov. 11, was assigned to EARTHSYSTEMS TECHNOLOGIES OPERATING LLC (Carrollton, Texas).

"System for multimode geophysical data acquisition" was invented by John Bryant (Dallas), Frederick Hershel Savage (Austin, Texas) and Timothy Beets (Austin, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for a multichannel geophysical data acquisition system is provided in the field of electrical resistivity tomography. Individual and autonomous node operating systems are provided. Separate communication channels for upstream and downstream data transfer, high voltage transfer and synchronization signals are provided. The method provi...