RH

Robert C. Helke

📍 Walworth, WI: #11 of 26 inventorsTop 45%
🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%
Overall (All Time): #4,124,943 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4237004 Method for treating waste water — 1980-12-02