Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6591911 | Multi-directional gun carrier method and apparatus | Daniel C. Markel, Simon L. Farrant, James E. Brooks | 2003-07-15 |
| 5816343 | Phased perforating guns | Daniel C. Markel, Jorge E. Lopez de Cardenas | 1998-10-06 |