Xiu-Wei Zhao

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Chelmsford, MA, US

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Patents Grantslast 30 patents

Information Patent Grant
Security system for notification of an undesired condition at a mon...
- Patent number RE38908
- Issue date Dec 6, 2005
- Biscom, Inc.
- Shu-Kuang Ho
- 348 - Television
Information Patent Grant
Security system for notification of an undesired condition at a mon...
- Patent number 6,493,022
- Issue date Dec 10, 2002
- Biscom, Inc.
- Shu-Kuang Ho
- G08 - SIGNALLING