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Sony filed a touch screen-based, portable device with the U.S. patent office on January 21, 2008. On June 26, 2008 the application was made public. According to the filing, the inventor is listed as Phil Harrison and the application simply patents touch screen technology for portable devices. The text, along with the filed images, seem to indicate that a new PSP or iPhone killer is in the works. Take a look at image below and click HERE to follow the link to the patent submission.
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