Donald R. Friedland

📍 Minneapolis, MN: #2,566 of 6,114 inventorsTop 45%

🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%

Overall (All Time): #2,303,781 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5236263	Printing ink mixing apparatus	—	1993-08-17
4720194	Liquid mixing apparatus	—	1988-01-19