Optics & Imaging
| Tue 30 Dec 2025
Beijing, Dec. 30 -- State Intellectual Property Office of China has awarded a patent to Jiangnan Ind Group Co Ltd for Telescopic Variable-pitch Cross-medium Propeller Mechanism. Wan Xiaohui, Yan Xuejian, Peng Shun, Dai Wenliu, Chen Zhaoren, Peng Shi, Luo Qian, Liao Huanhuan, Yang Jian, Huang Xiaoyan, Li Xin, Hu Sijie and Wang Mi..