Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10870269 | Modular radial impeller drum for printing devices | Richard A. Campbell, Timothy G. Shelhart | 2020-12-22 |
| 10689214 | Modular radial impeller drum with variable blade segments for printing devices | Richard A. Campbell, Timothy G. Shelhart | 2020-06-23 |