Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5623129 | Code-based, electromagnetic-field-responsive graphic data-acquisition system | — | 1997-04-22 |
| 5583323 | Calibration of graphic data-acquisition tracking system | Donald H. Zurstadt, Scott Wilson | 1996-12-10 |
| 5434370 | Marking system with pen-up/pen-down tracking | Scott Wilson, Donald H. Zurstadt | 1995-07-18 |
| 5248856 | Code-based, electromagnetic-field-responsive graphic data-acquisition system | — | 1993-09-28 |
| 4791433 | Line scan graphic recorder and method for intensity control via medium velocity assessment | — | 1988-12-13 |
| 4777329 | Graphic input system | — | 1988-10-11 |