EK

Ernest Karras

📍 Oak Brook, IL: #3 of 8 inventorsTop 40%
🗺 Illinois: #802 of 3,813 inventorsTop 25%
Overall (1989): #116,533 of 140,708Top 85%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4849971 Carrier telephone service analysis system Peter Chiodras, John M. Harrison 1989-07-18