US Patent Issued to XUZHOU XUGONG FOUNDATION CONSTRUCTION MACHINERY on Dec. 16 for "Test device and method for testing and commissioning comprehensive performance of rotary drilling rig" (Chinese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,297, issued on Dec. 16, was assigned to XUZHOU XUGONG FOUNDATION CONSTRUCTION MACHINERY Co. LTD. (Xuzhou, China).

"Test device and method for testing and commissioning comprehensive performance of rotary drilling rig" was invented by Jun Li (Xuzhou, China), Yan Lv (Xuzhou, China), Qiang Liu (Xuzhou, China), Dechun Ping (Xuzhou, China), Lihua Han (Xuzhou, China), Tong Chang (Xuzhou, China), Jie Zhou (Xuzhou, China), Gang Zhang (Xuzhou, China), Hui Chen (Xuzhou, China) and Yaqing Mu (Xuzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A test device for testing and commissioning comprehensive performance of a rotary drilling rig is provided. D...