Frederick E. Van Dusen

📍 Hopkins, MN: #100 of 249 inventorsTop 45%

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

Overall (All Time): #2,370,107 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4260313	Silo discharge door frame for use with silo clean chute funnel	—	1981-04-07
4242028	Ring type silo unloader	—	1980-12-30