Riser; Frederick M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Riser; Frederick M..The latest application filed is for "orbital wastewater treatment system with combined surface aerator and submerged impeller".
- Riser; Frederick M. - Salt Lake City UT
- Riser; Frederick M - Salt Lake City UT
- Riser; Frederick M. - Sandy UT
| Patent | Date |
|---|---|
| Orbital wastewater treatment system, method of operating same, and kit for modifying an orbital wastewater treatment system Grant 8,318,016 - Leland , et al. November 27, 2 | 2012-11-27 |
| Orbital wastewater treatment system and method of operating same Grant 8,057,674 - Leland , et al. November 15, 2 | 2011-11-15 |
| Orbital wastewater treatment system with combined surface aerator and submerged impeller Grant 7,186,332 - Curtis , et al. March 6, 2 | 2007-03-06 |
| Orbital wastewater treatment system with combined surface aerator and submerged impeller App 20050242015 - Curtis, Betty Ann ; et al. | 2005-11-03 |
| Aerobic waste sludge digester-thickener orbital system and method Grant 4,940,545 - DiGregorio , et al. July 10, 1 | 1990-07-10 |
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