YN

Yongxing Ni

HC Hangzhou Zhongtai Industrial Group Co.: 2 patents #1 of 4Top 25%
Overall (All Time): #1,820,197 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11759014 Multifunctional swivel chair tray and using method thereof — 2023-09-19
10631641 Spiral adjusting swivel chair tray for changing angle of torsion spring — 2020-04-28