Power supply device for radio telephone system

Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail

Reexamination Certificate

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Details

C455S462000, C455S463000, C455S573000, C379S413000, C379S428020, C379S433080

Reexamination Certificate

active

06862464

ABSTRACT:
The present invention relates to a power supply device for a radio telephone system which can normally perform radio communication during power failure, by providing power of a battery disposed at a main body of the system or a wireless handset to the inside circuit of the main body, when direct current power is not supplied to the radio telephone system due to the power failure or the like.

REFERENCES:
patent: 5578875 (1996-11-01), Dormer et al.
patent: 5596626 (1997-01-01), Nakayama
patent: 5661780 (1997-08-01), Yamamoto et al.
patent: 5805998 (1998-09-01), Kodama
patent: 6044280 (2000-03-01), Muller
patent: 6256519 (2001-07-01), Newton
patent: WO 9931860 (1999-06-01), None

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