YC

Yun Chi Chang

Overall (All Time): #2,191,693 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6746025 Rocker horse having movable configuration Kang Ho Choi 2004-06-08
4964319 Socket wrench device for rotating a spark plug 1990-10-23