Fred D. Johnson

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Evanston, IL, US

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Patents Grantslast 30 patents

Information Patent Grant
Anti-flaring video output amplifier circuit and technique
- Patent number 4,825,294
- Issue date Apr 25, 1989
- Zenith Electronics Corporation
- Fred D. Johnson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Amplifier having reduced power dissipation and improved slew rate
- Patent number 4,446,443
- Issue date May 1, 1984
- Zenith Radio Corporation
- Fred D. Johnson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Integratable CRT spot cut-off network
- Patent number 4,390,817
- Issue date Jun 28, 1983
- Zenith Radio Corporation
- Fred D. Johnson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Stabilization network for a cathode ray tube
- Patent number 4,370,674
- Issue date Jan 25, 1983
- Zenith Radio Corporation
- Fred D. Johnson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
G2 Set-up circuit for a television receiver
- Patent number 4,347,528
- Issue date Aug 31, 1982
- Zenith Radio Corporation
- Fred D. Johnson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Service switch arrangement for low level matrixing type television...
- Patent number 4,309,718
- Issue date Jan 5, 1982
- Zenith Radio Corporation
- Fred D. Johnson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE