Marvin H. Humbert

📍 Aberdeen, SD: #18 of 37 inventorsTop 50%

🗺 South Dakota: #1,077 of 2,308 inventorsTop 50%

Overall (All Time): #3,868,556 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4987701	Endless belt valve grinder	—	1991-01-29