TC

Tsun-Hsing Chen

Overall (All Time): #2,290,889 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5475996 Electromagnetic door lock 1995-12-19
D351982 Digital or key card operated electronic door lock 1994-11-01