Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D262165 | Combined chair and audio-visual learning module | Dennis L. Christiansen, Francis M. Andries | 1981-12-08 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D262165 | Combined chair and audio-visual learning module | Dennis L. Christiansen, Francis M. Andries | 1981-12-08 |