FJ

Fred D. Johnson

ZR Zenith Radio: 2 patents #7 of 68Top 15%
📍 Evanston, IL: #5 of 47 inventorsTop 15%
🗺 Illinois: #186 of 2,749 inventorsTop 7%
Overall (1982): #14,288 of 81,411Top 20%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4347528 G2 Set-up circuit for a television receiver George J. Tzakis 1982-08-31
4309718 Service switch arrangement for low level matrixing type television receiver 1982-01-05