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Thomas Farkas
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Ossining, NY, US
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last 30 patents
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Patent Grant
Coded communication system and method for controlling an electric lamp
Patent number
5,872,429
Issue date
Feb 16, 1999
Philips Electronics North America Corporation
Yongping Xia
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast with interface circuitry for multiple dimming in...
Patent number
5,691,605
Issue date
Nov 25, 1997
Philips Electronics North America
Yongping Xia
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast having a triac dimming filter with preconditione...
Patent number
5,604,411
Issue date
Feb 18, 1997
Philips Electronics North America Corporation
Sreeraman Venkitasubrahmanian
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Electronic ballast with interface circuitry for phase angle dimming...
Patent number
5,559,395
Issue date
Sep 24, 1996
Philips Electronics North America Corporation
Sreeraman Venkitasubrahmanian
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information
Patent Grant
Ballast stabilization circuitry for eliminating moding or oscillati...
Patent number
5,382,881
Issue date
Jan 17, 1995
North American Philips Corporation
Thomas Farkas
H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR