Removable trackball for a handheld wireless communication device
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United States of America Patent
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Jun 28, 2011
Grant Date -
Nov 8, 2007
app pub date -
Mar 13, 2007
filing date -
Mar 13, 2006
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A handheld wireless communication device cradleable by an user during text entry. A display and key field are located on a front face of the device. The key field includes alphanumeric input keys and menu control keys. Additionally, an user-removable trackball navigation tool is provided on the device. The trackball navigation tool can be releasably snap-engaged or releasably friction-engaged in the body of the device. The removable trackball navigation tool enables the user to independently remove the trackball navigation tool from the device and perform self-maintenance on the device with respect to the navigation tool.
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