Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4548486 | Transparency mount providing rotatable projection image | — | 1985-10-22 |
| 4293218 | Reference light beam projector | Edward G. Nielsen, Louis M. Chatterson | 1981-10-06 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4548486 | Transparency mount providing rotatable projection image | — | 1985-10-22 |
| 4293218 | Reference light beam projector | Edward G. Nielsen, Louis M. Chatterson | 1981-10-06 |