DO

David Otterdahl

📍 Elko, MN: #3 of 9 inventorsTop 35%
🗺 Minnesota: #1,731 of 5,562 inventorsTop 35%
Overall (2025): #410,187 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12330030 Electronic golf flagstick Robert Szymborski, Dale Szymborski 2025-06-17