KK

Karl J. F. Kroll

📍 Maple Grove, MN: #9 of 45 inventorsTop 20%
🗺 Minnesota: #813 of 3,156 inventorsTop 30%
Overall (1997): #122,797 of 185,788Top 70%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5664379 Stairway step assembly William P. Kroll, Paul Probst 1997-09-09