Shihua Shen

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Shanghai, CN

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Patents Grantslast 30 patents

Information Patent Grant
Ballast safety circuit
- Patent number 6,650,517
- Issue date Nov 18, 2003
- Koninklijke Philips Electronics N.V.
- Zhengguo Zhou
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Ballast safety circuit
- Publication number 20030137252
- Publication date Jul 24, 2003
- Zhengguo Zhou
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR