Medical
| Sat 22 Nov 2025
Beijing, Nov. 22 -- State Intellectual Property Office of China has received The Fourth Medical Center of Chinese PLA General Hospital patent application for Expandable Intervertebral Bone Grafting Device. Liu Jianheng, Li Ming, Cheng Junyao, Han Zhenchuan, Li Zijian, Gao Jianpeng, Chang Zhengyang, Wang Hufei, Liu Xiao, Zhang Li..