WC

Wen-Cheng Cho

Overall (All Time): #2,191,292 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6779491 Oil bubble heat convection controllable bottle device 2004-08-24
6740849 Two-layer dynamic heat convection water glass bottle 2004-05-25