DS

David C. Spragg

BT Bridgestone Firestone North American Tire: 1 patents #73 of 133Top 55%
📍 Hudson, OH: #352 of 536 inventorsTop 70%
🗺 Ohio: #42,657 of 73,341 inventorsTop 60%
Overall (All Time): #3,422,744 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
D524721 Tire tread Keith A. Dumigan, Francis J. Byrne, Yasuo Himuro, John P. Rodak, Andrew J. SVENSON +1 more 2006-07-11