Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6443140 | Accurate, multi-axis, computer-controlled object projection machine | Richard J. Richings | 2002-09-03 |
| 6347011 | Projection screen with movable shutter | Richard J. Richings | 2002-02-12 |