DD

Donald E. Drumm

BT Barrett Technology: 1 patents #1 of 12Top 9%
📍 Billerica, MA: #19 of 68 inventorsTop 30%
🗺 Massachusetts: #3,706 of 11,797 inventorsTop 35%
Overall (2025): #402,512 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12350830 Multi-active-axis, non-exoskeletal rehabilitation device William T. Townsend, David Wilkinson, Alexander Jenko, Julian Leland, Arvind Ananthanarayanan +6 more 2025-07-08