Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5317349 | Overhead projector with achromatic fresnel lens | — | 1994-05-31 |
| 5296882 | Overhead projector with catadioptric fresnel lens | John C. Nelson, Robert M. Fesler | 1994-03-22 |
DV
Dennis F. Vanderwerf
Overall (1994): #35,452 of 165,921Top 25%
2
Patents 1994