DH

Donald R. Hagen

RT Resistance Technology: 4 patents #1 of 17Top 6%
📍 Brooklyn Center, MN: #25 of 116 inventorsTop 25%
🗺 Minnesota: #15,886 of 52,454 inventorsTop 35%
Overall (All Time): #1,290,087 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5500901 Frequency response adjusting device Michael P. Geraci, Arman E. Sundquist 1996-03-19
5157371 Potentiometer retention mechanism and method of mounting Arman E. Sundquist, Gerald H. McDonald 1992-10-20
4636768 Compression connection for potentiometer leads 1987-01-13
4329676 Potentiometer Gerald H. McDonald 1982-05-11