Methods and systems for switching over a voice call | Patent Publication Number 20150358878

US 20150358878 A1

Patent NumberUS 09578570 B2

Application Number14826663

Filled DateAug 14, 2015

Priority DateDec 22, 2006

Publication DateDec 10, 2015

Original AssigneeTp Lab Inc.

Current AssigneeEnsco Technology Company

Inventor/ApplicantsShin Cheung Simon Chiu
Chi Fai Ho

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