DB

David A. Blackshear

📍 Mahtomedi, MN: #170 of 255 inventorsTop 70%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #3,970,162 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4649793 Humidity modifying device for guitars Perry L. Blackshear, Jr. 1987-03-17