ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,586, issued on Sept. 8, was assigned to Klemm Bohrtechnik GmbH (Drolshagen, Germany).

"Construction machine and method for carrying out a construction work step" was invented by Jochen Blens (Drolshagen-Schreiberhof, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "Construction machine, in particular drilling rig, with a construction working device for carrying out a work step, with a carriage, along the carriage longitudinal axis of which the construction working device is mounted so as to be axially displaceable, a carrier device with a running gear for moving the construction machine, and an adjusting device, by means of which the carriage ...