Furniture
| Sat 25 Apr 2026
Alexandria, April 25 -- United States Patent for Sofa Extension Apparatus has been issued to DewertOkin Technology Group. This invention was developed by Li Long, He Pengfei, Yang Liming, Shen Bin, Zhou Weiyao, Tao Kangming, Wang Guowei, Ye Qiqi, Zhang Guangjiao and Liu Shuangbo.
The patent application number is US20221827362..