Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8894020 | Block module for model train layout control | — | 2014-11-25 |
| 4646078 | Graphics display rapid pattern fill using undisplayed frame buffer memory | David L. Knierim | 1987-02-24 |
| 4586037 | Raster display smooth line generation | David L. Knierim, John C. Dalrymple | 1986-04-29 |