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Robert W. Johnson
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Levittown, PA, US
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Patents Grants
last 30 patents
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Patent Grant
Method and apparatus for controlling a resonant power module
Patent number
4,301,398
Issue date
Nov 17, 1981
Exide Electronics Corporation
Robert W. Johnson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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Patent Grant
Emergency lighting and fire detector system
Patent number
4,255,746
Issue date
Mar 10, 1981
ESB Inc.
Robert W. Johnson
G08 - SIGNALLING
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Patent Grant
Circuit for an emergency lighting and fire detector system
Patent number
4,199,754
Issue date
Apr 22, 1980
ESB Incorporated
Robert W. Johnson
G08 - SIGNALLING
Information
Patent Grant
Rapid power transfer system
Patent number
4,087,697
Issue date
May 2, 1978
ESB Incorporated
Robert W. Johnson
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER