William Steven Kroll

📍 Hamel, MN: #8 of 24 inventorsTop 35%

🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%

Overall (All Time): #1,390,484 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
11629535	Surface mounted door check device	—	2023-04-18
D588181	Free-standing immersive rear-projection dome screen	—	2009-03-10
D533244	Golf putter	—	2006-12-05