Arthur B. Engstrom

BI Bicycle Tools Incorporated: 1 patents #11 of 11Top 100%

📍 Maplewood, MN: #335 of 510 inventorsTop 70%

🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%

Overall (All Time): #3,935,530 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4858266	Bicycle tool	—	1989-08-22