DW

Dennis G. Winberg

EC Ecodyne: 3 patents #4 of 46Top 9%
ES Ecowater Systems: 3 patents #15 of 63Top 25%
📍 Cottage Grove, MN: #91 of 362 inventorsTop 30%
🗺 Minnesota: #11,810 of 52,454 inventorsTop 25%
Overall (All Time): #891,934 of 4,157,543Top 25%
6
Patents All Time

Issued Patents All Time

Showing 1–6 of 6 patents

Patent #TitleCo-InventorsDate
D336051 Water softener control and indicating panel Michael E. Drager, Jeffrey Zimmerman, John R. Nelson 1993-06-01
D328330 Water softener Michael E. Drager, Edward J. Tischler 1992-07-28
D328331 Water softener Michael E. Drager, Edward J. Tischler 1992-07-28
4722797 Method for regeneration of a water softener Gary W. Gauer, Duane D. Nowlin, Thomas Weber 1988-02-02
4347224 Chemical dispenser Adolf F. Beckert, Duane D. Nowlin 1982-08-31
4332685 Method and apparatus for treating water Duane D. Nowlin 1982-06-01