RH

Richard D. Hetfield

MB Midland Brake: 1 patents #13 of 31Top 45%
📍 Owosso, MI: #74 of 136 inventorsTop 55%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #3,900,032 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4915456 Compact, integrated, multi-function brake valve Dario Gross, Jeffery S. Johnston 1990-04-10