Issued Patents 2016
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9506319 | Composite wellbore ball valve | Frank D. Kalb | 2016-11-29 |
| 9360123 | Valve | Drayton W. Bryant | 2016-06-07 |
| 9328584 | Debris anti-compaction system for ball valves | Frank D. Kalb | 2016-05-03 |