H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 3/428 (2006.01) H04W 4/16 (2009.01)
Patent
CA 2718213
Systems, methods and programmed instructions are disclosed useful for maintaining a communication session previously established between a first telephony device and at least one second telephony device while a power supply of the first telephony device is serviced.
Gisby Douglas Michael
Yach David Paul
Ascendent Telecommunications Inc.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
Research In Motion Limited
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