RC

Richard Chang

WC Welcome Co.: 2 patents #1 of 1Top 100%
Overall (2019): #128,330 of 560,194Top 25%
2
Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D860277 Battery-type vacuum-pumping device 2019-09-17
D845370 Double-end sealer 2019-04-09