US Patent 7778630 System for switching over a voice call
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Patent abstract
A system and method for switching a voice call from an Instant Messaging (IM) based voice network to a cellular voice network. A telephone adapted to switch a voice call from an Instant Messaging (IM) based voice network to a cellular voice network.
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Patent Inventor Names
Chi Fai Ho0
Shin Cheung Simon Chiu0
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US Patent 07778630 System for switching over a voice call US Patent 7778630 System for switching over a voice call
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Patent Number
07778630
Patent Number
7778630
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US Patent 07778630 System for switching over a voice call
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Is a
Patent jurisdiction
Patent number
07778630
Date of patent
August 17, 2010
Patent application number
11615636
Date Filed
December 22, 2006
Patent primary examiner
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