DH

Donald K. Hager

DD Damper Design: 1 patents #2 of 4Top 50%
📍 Emmaus, PA: #251 of 365 inventorsTop 70%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #3,974,559 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4666270 Closure for controlling the flow of a hot fluid — 1987-05-19