US Patent Issued to Huating Coal Group on April 21 for "Static crushing directional anchor withdrawal method at end of large-mining-height working face" (Chinese Inventors)

ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,121, issued on April 21, was assigned to Huating Coal Group Co. Ltd. (Pingliang City, China).

"Static crushing directional anchor withdrawal method at end of large-mining-height working face" was invented by Xuandong Li (Pingliang City, China), Jinsheng Ma (Pingliang City, China), Zhihong Song (Pingliang City, China), Lingyun Li (Pingliang City, China), Chao Gao (Pingliang City, China), Peng Li (Pingliang City, China), Fuqi Wang (Pingliang City, China), Yuanda Ren (Pingliang City, China), Longfei Wang (Pingliang City, China), Hua Zhang (Pingliang City, China), Jiangning Wang (Pingliang City, China), Xiaogang Li (Pingliang City, China), Huiqiang Zhao (Pingliang City, China), Zhixi...