DH

Don Van Houweling

📍 Perry, IA: #4 of 22 inventorsTop 20%
🗺 Iowa: #6,094 of 15,303 inventorsTop 40%
Overall (All Time): #1,730,841 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
12385869 Soil moisture and nutrient sensor system Bradley G. Rathje, Arthur Henry Pickworth 2025-08-12
12130252 Soil moisture and nutrient sensor system Bradley G. Rathje, Arthur Henry Pickworth 2024-10-29