Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5022984 | Froth flotation apparatus and method | John J. Pimley, Christopher M. Vitori, Paul G. Marsh | 1991-06-11 |
| 4919797 | Screening apparatus for paper making stock | David E. Chupka | 1990-04-24 |