HH

Harold O. Hansen

UN United Networks: 1 patents #5 of 6Top 85%
📍 Chicago, IL: #7,538 of 13,327 inventorsTop 60%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #4,123,278 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4232200 Dialing system Alfred M. Hestad, Jan Synek 1980-11-04