Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6708768 | Drillable bridge plug | Douglas J. Lehr | 2004-03-23 |
| 6708770 | Drillable bridge plug | Douglas J. Lehr | 2004-03-23 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6708768 | Drillable bridge plug | Douglas J. Lehr | 2004-03-23 |
| 6708770 | Drillable bridge plug | Douglas J. Lehr | 2004-03-23 |