John D. Cromley, Jr.

📍 Grand Rapids, MI: #20 of 100 inventorsTop 20%

🗺 Michigan: #973 of 4,313 inventorsTop 25%

Overall (1994): #115,084 of 165,921Top 70%

Patents 1994

Issued Patents 1994

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5326128	Variable-width torsion spring axle	—	1994-07-05