TH

Tsang-Chang Hwang

Overall (All Time): #1,270,868 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6659420 Manual and automatic flow control valve Kuo-Chou Lee, Chi-Chin Hsu 2003-12-09
6036056 Automatic soap dispensing device Kuo-Chou Lee 2000-03-14
5611465 Automatic toilet bowl cleaner Kuo-Chou Lee, Aling Shu 1997-03-18
5492247 Automatic soap dispenser Aling Shu, Kuo-Chou Lee 1996-02-20