DA

Duwane R. Ashbaugh

📍 Six Lakes, MI: #4 of 7 inventorsTop 60%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #4,038,516 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4462715 System for the one-step dewatering of a trench and the construction of a pipeline bed 1984-07-31