SD

Shing-Hwa Doong

Overall (All Time): #2,213,317 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6397646 Door lock 2002-06-04
6381999 Power supplying device for a door lock 2002-05-07