Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4663040 | Rotary drum filter grid extension and method | Robert V. Hunziker, Phillip N. Nelson, Michael T. Risinger | 1987-05-05 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4663040 | Rotary drum filter grid extension and method | Robert V. Hunziker, Phillip N. Nelson, Michael T. Risinger | 1987-05-05 |