Guanzhou LIN

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Shenzhen, CN

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Patents Grantslast 30 patents

Information Patent Grant
System and method for preventing spam over internet telephony
- Patent number 8,243,716
- Issue date Aug 14, 2012
- Huawei Technologies Co., Ltd.
- Lifeng Liu
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
SYSTEM AND METHOD FOR PREVENTING SPAM OVER INTERNET TELEPHONY
- Publication number 20080075258
- Publication date Mar 27, 2008
- Huawei Technologies Co., Ltd
- Lifeng LIU
- H04 - ELECTRIC COMMUNICATION TECHNIQUE