Pipe
| Mon 24 Aug 2026
Alexandria, Aug. 24 -- U.S. Patent and Trademark Office has awarded a patent to CCTEG Chongqing Research Inst Co Ltd for Mining Hose Connecting Device and Method. Meng Xianzheng, Zhang Yongjiang, Hu Shanchao, Liu Jun, Lu Zhanjin, Zhao Xusheng, Wang Zhonghua, Ji Fei, Yang Huiming, Huang Zhenfei, Li Shuai, Guo Lindong, Cao Jianjun..