TC

Tsung-Chieh Chang

Overall (2004): #36,536 of 270,089Top 15%
2
Patents 2004

Issued Patents 2004

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6776499 Screw opener with an illumination device 2004-08-17
6745650 Spanner head orientation positioning device 2004-06-08