HG

Harlan J. Grayden

UN Unknown: 4 patents #4,220 of 83,584Top 6%
📍 Roseville, MN: #386 of 611 inventorsTop 65%
🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%
Overall (All Time): #4,038,083 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4461135 Wallboard trim apparatus Dallas A. Anderson 1984-07-24