Ngai Kwok Hing Pilcher

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Hong Kong, HK

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for an electronic hook switch for customer prem...
- Patent number 7,864,948
- Issue date Jan 4, 2011
- VTech Telecommunications Limited
- Ngai Kwok Hing Pilcher
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Systems and methods for an electronic hook switch for customer prem...
- Patent number 7,103,175
- Issue date Sep 5, 2006
- VTech Telecommunications Limited
- Ngai Kwok Hing Pilcher
- H04 - ELECTRIC COMMUNICATION TECHNIQUE