Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4507737 | Heading reference and land navigation system | Franciscus Schermers, Daniel L. Sugarbaker | 1985-03-26 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4507737 | Heading reference and land navigation system | Franciscus Schermers, Daniel L. Sugarbaker | 1985-03-26 |