EH

Earl R. Helderman

Tektronix: 1 patents #3 of 24Top 15%
📍 Hillsboro, OR: #2 of 13 inventorsTop 20%
🗺 Oregon: #40 of 384 inventorsTop 15%
Overall (1982): #68,093 of 81,411Top 85%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4331476 Sputtering targets with low mobile ion contamination Robert R. Zimmerman 1982-05-25