Issued Patents 2017
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9677389 | Dart valve assembly for a bypass plunger | Mitchell A. Boyd, John M. Lee, Garrett W. Winford | 2017-06-13 |
| 9624996 | Robust bumper spring assembly | Mitchell A. Boyd | 2017-04-18 |