Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7404538 | Dual restrictor shut-off valve | Scott Gill, Justin Miller | 2008-07-29 |
| 5265438 | Dual restrictor flow control | Steven M. Knowles | 1993-11-30 |
| 4896696 | Flow control restrictor | Andrew Bradley, Steven M. Knowles | 1990-01-30 |