ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,886, issued on Oct. 21, was assigned to TRACTO-TECHNIK GMBH & Co. KG (Lennestadt, Germany).

"Method and system for determining a soil class and use during determination of a soil class" was invented by Sebastian Fischer (Lennestadt, Germany) and Markus Hamers (Lennestadt, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to methods for determining a soil class, in which an earth borehole is introduced into the ground by means of a ground drilling device with a drill head, wherein a parameter of the ground drilling device and/or an operational parameter of the ground drilling device is assessed during the determination of w...