Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6443249 | Rotary drill bits for directional drilling exhibiting variable weight-on-bit dependent cutting characteristics | Christopher C. Beuershausen, Mark W. Dykstra, Roger Fincher, Roland Illerhaus, Steve R. Matson +2 more | 2002-09-03 |
| 6360208 | Method and apparatus for automatic tax verification | Paul A. Maltseff | 2002-03-19 |