Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8967300 | Pressure activated flow switch for a downhole tool | Charles H. Dewey, John E. Campbell | 2015-03-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8967300 | Pressure activated flow switch for a downhole tool | Charles H. Dewey, John E. Campbell | 2015-03-03 |