DR

Dirk D. Ringgenberg

📍 Madrid, IA: #2 of 3 inventorsTop 70%
🗺 Iowa: #515 of 1,684 inventorsTop 35%
Overall (2019): #485,472 of 560,194Top 90%
1
Patents 2019

Issued Patents 2019

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10458747 Apparatus for prevention of dropping of handgun — 2019-10-29