Issued Patents 2005
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6935441 | Drill bits with reduced exposure of cutters | Mark W. Dykstra, William Heuser, Theodore E. Zaleski, Jr., Jack T. Oldham, Terry D. Watts +3 more | 2005-08-30 |
| 6883623 | Earth boring apparatus and method offering improved gage trimmer protection | Ronny D. McCormick, Mumtaz Ball, Mark E. Anderson, Mark W. Dykstra, Matthew R. Isbell | 2005-04-26 |