Keith Billings

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Guelph, CA

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Patents Grantslast 30 patents

Information Patent Grant
Lamp ballast for reducing interference current
- Patent number 6,366,029
- Issue date Apr 2, 2002
- Keith Billings
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Current fed parallel resonant ballast
- Patent number 6,326,737
- Issue date Dec 4, 2001
- Keith Billings
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Current fed, parallel resonant ballast
- Patent number 6,107,751
- Issue date Aug 22, 2000
- Keith Billings
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Polarity reversing circuit having energy compensation
- Patent number 5,815,388
- Issue date Sep 29, 1998
- Sierra Applied Sciences, Inc.
- Barry W. Manley
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Circuit for reversing polarity on electrodes
- Patent number 5,682,067
- Issue date Oct 28, 1997
- Sierra Applied Sciences, Inc.
- Barry W. Manley
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
Lamp ballast for reducing interference current
- Publication number 20020153848
- Publication date Oct 24, 2002
- Keith Billings
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC