PC

Paul O. Christianson

MA Mac: 1 patents #12 of 23Top 55%
📍 Minot, ND: #23 of 68 inventorsTop 35%
🗺 North Dakota: #1,185 of 2,395 inventorsTop 50%
Overall (All Time): #3,985,467 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4706646 Total counterflow heat exchanger James M. McDonald 1987-11-17