Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971562 | Didactic device to aid in understanding and teaching about electromagnetic fields and their effects | Cecil W. LeFevre | 1990-11-20 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4971562 | Didactic device to aid in understanding and teaching about electromagnetic fields and their effects | Cecil W. LeFevre | 1990-11-20 |