Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5191480 | Optical accessory for digitizer cursors | David A. Siefer, George Hesse | 1993-03-02 | $483,000 |
| 5153570 | Magnification assembly for digitizer cursor | — | 1992-10-06 | $224,000 |
| 5014044 | Magnification assembly for digitizer cursor | — | 1991-05-07 | $980,000 |
| 4988836 | Digitizer tablet with integral storage | — | 1991-01-29 | $591,000 |