DN

Donald C. Nielsen

📍 Beach Park, IL: #1 of 6 inventorsTop 20%
🗺 Illinois: #1,021 of 4,484 inventorsTop 25%
Overall (1994): #140,813 of 165,921Top 85%
1
Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5369698 Woodpecker simulating telephone ringing device — 1994-11-29