DU

Donald J. Umbenhauer

📍 Sinking Spring, PA: #85 of 152 inventorsTop 60%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,041,010 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4471542 Easy-clamp scroll frame — 1984-09-18