Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6443246 | Long barrel inserts for earth-boring bit | Rudolf Carl Pessier, George E. Dolezal, Matthew R. Isbell, James Lawrence Jacobsen, Brian Baker | 2002-09-03 |
| 6354387 | Nozzle orientation for roller cone rock bit | Thomas M. Harris, Leroy W. Ledgerwood, III, Sean K. Berzas, Brian Baker | 2002-03-12 |