DH

David B. Hallen

📍 Rutland, MA: #9 of 14 inventorsTop 65%
🗺 Massachusetts: #5,264 of 14,267 inventorsTop 40%
Overall (2019): #497,164 of 560,194Top 90%
1
Patents 2019

Issued Patents 2019

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10173871 Winch hoist pull pin handle Richard A. Perduta 2019-01-08