JL

Jen-Chieh Lee

Overall (2002): #59,593 of 266,432Top 25%
2
Patents 2002

Issued Patents 2002

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6499720 Fireproof structure of a ball valve 2002-12-31
6488261 Ball valve 2002-12-03