PE

Philip J. Engelman

NH Ntdrill Holdings: 1 patents #4 of 7Top 60%
📍 Ham Lake, MN: #17 of 38 inventorsTop 45%
🗺 Minnesota: #2,366 of 6,876 inventorsTop 35%
Overall (2022): #301,072 of 548,613Top 55%
1
Patents 2022

Issued Patents 2022

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11236575 Rotating control device with multiple seal cartridge Earl Dietrich, Christian Leuchtenberg, Jeffrey S. Meister, Daniel Sabelko, Nicolas A. Haugen 2022-02-01