Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9062680 | Dual channel compliant turbine pump | Chih-Min Lin, William J. Watkins | 2015-06-23 |
| 7357341 | Two stage sewage grinder pump | Gregory J. Gutwein, Donald Holder, Mark Kowalak | 2008-04-15 |
| 6821416 | Pond system and related pump | David R. Kelly, Matthew J. Gulisano, Allan R. Kishpaugh, Donald Holder | 2004-11-23 |