ALEXANDRIA, Va., June 16 -- United States Patent no. 12,303,441, issued on May 20, was assigned to SHANGHAI BANGBANG ROBOTICS Co. LTD (Shanghai) and Jiangsu BangBang Intelligent Technology Co. Ltd. (Changzhou, China).
"Collapsible wheelchair" was invented by Jianguo Li (Shanghai), Yongqiang Li (Shanghai), Jie Liu (Shanghai), Xiaodong Wang (Shanghai), Zhefu Zhang (Shanghai), Canfeng Liu (Shanghai) and Xiangcheng Liao (Shanghai).
According to the abstract* released by the U.S. Patent & Trademark Office: "Embodiments of the present disclosure provide a collapsible wheelchair, including: a movable chassis; a chair; a chair backrest; at least one first folding mechanism, installed between the movable chassis and the chair; and at least one sec...