KC

Kin Hung Jeffrey Chang

📍 Vancouver, CA: #2,049 of 5,070 inventorsTop 45%
Overall (All Time): #1,969,628 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
10155627 Tapered drive bar apparatus 2018-12-18
9833014 Apparatus and method for fluidized bed treatment of materials Justin Sum Ming Lai 2017-12-05