Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7484710 | Fluid flow control valve with high temperature bi-directional shutoff | David John Koester, Lynn Mahncke, Brandon Wayne Bell, Ronald R. Brestel | 2009-02-03 |
| 6974121 | Fluid flow control valve with bi-directional shutoff | David John Koester, Lynn Mahncke, Brandon Wayne Bell, Loree Lee Bovee, Gary Alan Witt | 2005-12-13 |