Telephonic communications – Substation or terminal circuitry – Power control or detection circuit
Reexamination Certificate
2006-01-26
2011-11-22
Goins, Davetta W (Department: 2614)
Telephonic communications
Substation or terminal circuitry
Power control or detection circuit
C379S100150
Reexamination Certificate
active
08064593
ABSTRACT:
Systems for a loss of power detection for headset amplifiers are disclosed. The system generally includes a headset and headset amplifier. The headset amplifier includes a switch for electrically connecting the headset and a telephone apparatus. The switch is closed when the headset amplifier is in a powered status and the switch is open when the headset amplifier is in a powerless status.
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Goins Davetta W
Islam Mohammad
Plantronics Inc.
The Intellectual Property Law Office of Thomas Chuang
LandOfFree
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