Jian Ying

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
Method of implementing IP telephone gatekeeper group and gatekeeper...
- Patent number 7,403,534
- Issue date Jul 22, 2008
- Huawei Technologies Co., Ltd.
- Kewen Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
Method of implementing ip telephone gatekeeper group and gatekeeper...
- Publication number 20040264509
- Publication date Dec 30, 2004
- Kewen Hu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE