Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6048132 | Filter underdrain with prefabricated cells | John A. Kupke, John F. Pfeifer, Jr. | 2000-04-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6048132 | Filter underdrain with prefabricated cells | John A. Kupke, John F. Pfeifer, Jr. | 2000-04-11 |