Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6192315 | Dual-calibrated compass | James R. Geschke, Thomas R. Olson, Mark Michmerhuizen | 2001-02-20 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6192315 | Dual-calibrated compass | James R. Geschke, Thomas R. Olson, Mark Michmerhuizen | 2001-02-20 |