DB

David A. Blackburn

📍 Wakefield, RI: #1 of 5 inventorsTop 20%
🗺 Rhode Island: #29 of 144 inventorsTop 25%
Overall (1982): #71,123 of 81,411Top 90%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4334652 Expandible devices for internally gripping cores or the like 1982-06-15