DB

David A. Blackburn

📍 Wakefield, RI: #56 of 139 inventorsTop 45%
🗺 Rhode Island: #2,419 of 6,211 inventorsTop 40%
Overall (All Time): #2,286,405 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5410913 Remote indicating liquid level sensor — 1995-05-02
4334652 Expandible devices for internally gripping cores or the like — 1982-06-15