DC

Donald E. Campbell

📍 Reno, NV: #905 of 2,043 inventorsTop 45%
🗺 Nevada: #3,123 of 8,397 inventorsTop 40%
Overall (All Time): #2,295,559 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5327500 Cerumen barrier for custom in the ear type hearing intruments 1994-07-05
4991265 Cord tie device Suzanne R. Darling, Kristian R. Darling 1991-02-12