DR

Daniel J. Rathjen

📍 Davenport, IA: #4 of 16 inventorsTop 25%
🗺 Iowa: #47 of 364 inventorsTop 15%
Overall (1982): #79,103 of 81,411Top 100%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4355813 Playing field layout — 1982-10-26