JF

John Frein

DC Donaldson Company: 1 patents #39 of 136Top 30%
📍 Bloomington, MN: #36 of 113 inventorsTop 35%
🗺 Minnesota: #2,374 of 7,038 inventorsTop 35%
Overall (2021): #399,194 of 548,734Top 75%
1
Patents 2021

Issued Patents 2021

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10940414 Recirculation filter for an electronics enclosure Allen N. Nicklay, Scott Keller, Stanley B. Miller, III, Katsushi Isogawa 2021-03-09