DS

Douglas Steinfeld

📍 Marlborough, MA: #528 of 796 inventorsTop 70%
🗺 Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #3,531,317 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D483390 Audio-visual presentation device Richard C. LaPierre 2003-12-09