Richard H. Koeppl

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Topsfield, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Three-phase electronic ballast
- Patent number 6,906,474
- Issue date Jun 14, 2005
- Osram Sylvania, Inc.
- Grigoriy A. Trestman
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Electronic ballast with adaptable charge pump power factor correction
- Patent number 6,680,587
- Issue date Jan 20, 2004
- Osram Sylvania Inc.
- Grigoriy A. Trestman
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR

Patents Applicationslast 30 patents

Information Patent Application
Three-phase electronic ballast
- Publication number 20050067974
- Publication date Mar 31, 2005
- Grigoriy A. Trestman
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR