RD

Richard J. Duffy

📍 Salem, MA: #2 of 6 inventorsTop 35%
🗺 Massachusetts: #329 of 1,827 inventorsTop 20%
Overall (1982): #36,768 of 81,411Top 50%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4366190 Locking patch machine Philip J. Rodden 1982-12-28