ALEXANDRIA, Va., July 14 -- United States Patent no. 12,680,274, issued on July 14, was assigned to YANMAR HOLDINGS Co. LTD. (Osaka, Japan).

"Construction machine" was invented by Tatsumasa Wakata (Chikugo, Japan), Kazuki Takeda (Chikugo, Japan) and Seiya Norimoto (Chikugo, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An excavation work machine includes a hydraulic oil tank provided in a tank chamber and storing hydraulic oil that actuates a plurality of hydraulic actuators, a control valve controlling a flow of pressure oil supplied from the hydraulic oil tank to each of the hydraulic actuators, a plurality of hydraulic hoses extending from the control valve and communicatively connected to each of ...