Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653423 | Knife gate valve with mechanically retained gate seat | Calvin Young, David L. Gambetta, Jon A. Hansen, Nolan D. King, Darrel J. DesRochers | 1997-08-05 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5653423 | Knife gate valve with mechanically retained gate seat | Calvin Young, David L. Gambetta, Jon A. Hansen, Nolan D. King, Darrel J. DesRochers | 1997-08-05 |