Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4815314 | Particulate mass measuring apparatus | — | 1989-03-28 |
| 4561018 | Apparatus for continuously inspecting the physical characteristics of particulate matter | Robert O. Berthel, Dennis L. LaGross | 1985-12-24 |
| 4514758 | Fall velocity indicator/viewer | Robert O. Berthel, Stephen H. Jones, Anthony J. Matthews | 1985-04-30 |
| 4499761 | Snow scale/rate meter | Anthony J. Matthews, Robert O. Berthel, Dennis L. LaGross | 1985-02-19 |
| 4476718 | Rain rate meter | Stephen D. Crist, Dennis L. LaGross | 1984-10-16 |