FA

Fredrick Arnoldt

DI Ductmate Industries: 1 patents #15 of 19Top 80%
📍 Bethel Park, PA: #149 of 258 inventorsTop 60%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,967,288 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4639574 Automatic duct welding machine Peter J. Arnoldt 1987-01-27