Roberto Zafferri

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Lantau Island, HK

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Patents Grantslast 30 patents

Information Patent Grant
Stepping motor
- Patent number 6,903,469
- Issue date Jun 7, 2005
- Wellgain Optical Communications Limited
- Tai Wo Ng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Stepping Motor
- Publication number 20080018208
- Publication date Jan 24, 2008
- Roberto Zafferri
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER