WC

Wen-Kwei Chang

Overall (All Time): #1,243,087 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7712340 Lock structure — 2010-05-11
6769277 Structure of a locker — 2004-08-03
6769278 Anti-burglar device of a door locker — 2004-08-03
6269575 Locking device for the trigger of a pistol — 2001-08-07