Detachable back-up battery pack for cell phone

Details Detachable back-up battery pack for cell phone Detachable back-up battery pack for cell phone

2007-03-05

2009-11-17

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Cell or battery charger structure

For handheld device

Reexamination Certificate

active

07619388

ABSTRACT:
A back-up battery pack for use to charge a cell phone when the cell phone battery is drained allowing the cell phone to be continuously used without interruption.

REFERENCES:
patent: 5664292 (1997-09-01), Chen
patent: 5859481 (1999-01-01), Banyas
patent: 2003/0218445 (2003-11-01), Behar
patent: 2005/0088141 (2005-04-01), Lee et al.
patent: 2005/0231161 (2005-10-01), Jones et al.
patent: 2007/0236180 (2007-10-01), Rodgers

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