Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824227 | Optimum riser angle for fresnel lenses in projection screens | Jill F. Goldenberg | 1989-04-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824227 | Optimum riser angle for fresnel lenses in projection screens | Jill F. Goldenberg | 1989-04-25 |