HH

Hjalmar S. Halvorsen

📍 Bergen, NO: #165 of 375 inventorsTop 45%
Overall (All Time): #3,972,594 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4659095 Roller skate arrangement — 1987-04-21