Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4806083 | Submersible pump with expanded foam housing | Darryl M. Nielsen, Terry A. Peterson | 1989-02-21 |
| 4726742 | Guide structure for submersible pump system | Joe A. Harbison | 1988-02-23 |
| 4684331 | Vaned slinger for pumps | Darryl M. Nielsen, Charles F. Wheeler | 1987-08-04 |
| 4679991 | Submersible pump and wastewater basin apparatus | Joe A. Harbison, Darryl M. Nielsen | 1987-07-14 |
| 4422469 | Submersible pump check valve | Elmer M. Deters | 1983-12-27 |
| 4406582 | Submersible pump discharge head | — | 1983-09-27 |