Xinyu Lu

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Calgary, CA

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Patents Grantslast 30 patents

Information Patent Grant
System for and method of hairpinning a remote PBX or KTS or gateway...
- Patent number 7,657,019
- Issue date Feb 2, 2010
- Tortel USA, LLC
- Zhi Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE

Patents Applicationslast 30 patents

Information Patent Application
System for and method of hairpinning a remote PBX or KTS or gateway...
- Publication number 20040013259
- Publication date Jan 22, 2004
- Zhi Zhang
- H04 - ELECTRIC COMMUNICATION TECHNIQUE