DJ

David A. DeFrance, Jr.

📍 Bellevue, IL: #1 of 3 inventorsTop 35%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #3,882,999 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5040012 Extended X-ray film development controller G. W. Eklund, Dale Surratt, Daniel E. Koonce 1991-08-13