Logan H. Mathis

RV Ross Operating Valve: 1 patents #1 of 2Top 50%

📍 Southfield, MI: #14 of 63 inventorsTop 25%

🗺 Michigan: #694 of 3,452 inventorsTop 25%

Overall (1989): #83,035 of 140,708Top 60%

Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4883091	Multi-port self-regulating proportional pressure control valve	Charles A. Weiler, Jr.	1989-11-28