HT

Hung-Cheng Tsai

EC Ez Trend Technology Co.: 2 patents #2 of 5Top 40%
Overall (All Time): #2,192,711 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6807834 Electric door lock with a coupling mechanism for selective engagement between a deadbolt operating spindle and a door handle — 2004-10-26
6761051 Electric padlock — 2004-07-13