DC

Dorothy A. Callahan

📍 Tewksbury, MA: #19 of 49 inventorsTop 40%
🗺 Massachusetts: #4,566 of 12,682 inventorsTop 40%
Overall (2018): #434,241 of 503,207Top 90%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D828135 Combination tool John T. Callahan, Jr. 2018-09-11