Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659434 | Collapsible sparger | Henry J. Semerak, Rodney D. Chevalier, Willibrord A. Groten, Clifford S. Crossland | 2003-12-09 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6659434 | Collapsible sparger | Henry J. Semerak, Rodney D. Chevalier, Willibrord A. Groten, Clifford S. Crossland | 2003-12-09 |