WC

Wen-Cheng Cho

Overall (2004): #35,527 of 270,089Top 15%
2
Patents 2004

Issued Patents 2004

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