Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5374969 | Portable overhead projector | David Kyhl | 1994-12-20 |
| 5025320 | Video imaging podium | — | 1991-06-18 |
| D307030 | Light box assembly for an overhead projector | — | 1990-04-03 |
| 4795252 | Overhead projector | — | 1989-01-03 |
| 4728184 | Foldable transparency enlarger for overhead projector | — | 1988-03-01 |
| D281506 | Overhead projector | Vincent E. DeLongis | 1985-11-26 |
| 4449800 | Portable overhead projector | Vincent E. De Longis | 1984-05-22 |