Donald E. Frith

📍 Champaign, IL: #438 of 1,105 inventorsTop 40%

🗺 Illinois: #34,584 of 84,256 inventorsTop 45%

Overall (All Time): #2,263,531 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5797728	Disk-shaped impeller for mixing fluids	—	1998-08-25
4538352	Shrinkage compensated measuring device	—	1985-09-03