DH

David Hamm

BC B.A. Ballou & Co.: 1 patents #1 of 1Top 100%
📍 Rehoboth, MA: #3 of 13 inventorsTop 25%
🗺 Massachusetts: #1,861 of 6,881 inventorsTop 30%
Overall (2003): #242,288 of 273,478Top 90%
1
Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6557220 Security clutch with self-centering spring — 2003-05-06