AL

Allan L. Liebrenz

DC Donaldson Company: 2 patents #358 of 695Top 55%
📍 Excelsior, MN: #99 of 237 inventorsTop 45%
🗺 Minnesota: #23,881 of 52,454 inventorsTop 50%
Overall (All Time): #2,239,145 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
6077335 Filter and method for making a filter Kirk A. Schneider, Henry J. Drasner, III, Katsushi Isogawa, Stanley B. Miller, III, Paul L. Kojetin +3 more 2000-06-20
5997618 Filter and method for making a filter Kirk A. Schneider, Henry J. Drasner, III, Katsushi Isogawa, Stanley B. Miller, III, Paul L. Kojetin +3 more 1999-12-07