Stephen J. Underwood

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Hong Kong, CN

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Patents Grantslast 30 patents

Information Patent Grant
Poly-phase electric energy meter
- Patent number 7,589,516
- Issue date Sep 15, 2009
- Texas Instruments Incorporated
- Volker Rzehak
- G01 - MEASURING TESTING
Information Patent Grant
Electricity meter with multiple gains signal to an A/D converter
- Patent number 6,943,539
- Issue date Sep 13, 2005
- Texas Instruments Incorporated
- Vincent Wei Chit Chan
- G01 - MEASURING TESTING

Patents Applicationslast 30 patents

Information Patent Application
Poly-Phase Electric Energy Meter
- Publication number 20080186013
- Publication date Aug 7, 2008
- Volker Rzehak
- G01 - MEASURING TESTING
Information Patent Application
Electricity meter with multiple gains signal to an A/D converter
- Publication number 20050001610
- Publication date Jan 6, 2005
- Vincent Wei Chit Chan
- G01 - MEASURING TESTING