Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5525259 | Europium-doped yttrium oxide phosphor | Robin W. Munn, Richard G. W. Gingerich | 1996-06-11 |
| 4859497 | Process for imparting stir-in capabilities to a silver activated zinc sulfide phosphor | Robert W. Wolfe | 1989-08-22 |
| 4522607 | Toy railroad vehicle with alignment bias | Eugene J. Kilroy, Thomas Grimm, Nicholas DeAnda | 1985-06-11 |
| 4366645 | Steering mechanism for toy vehicles | Philip W. Crain | 1983-01-04 |