Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11047486 | Expanding gate valve | Keith David Farquharson, Tianle Guo, Thomas Gust, Tony Lam | 2021-06-29 |
| 7562859 | Gate valve with tongue and groove or bridging seal to annular seat elements | Tony Lam, Tianle Guo, Glen Murray Eleniak | 2009-07-21 |