Less than a month before they are due to go on sale, Tablet PCs from a variety of companies were unveiled to the public Wednesday as the World PC Expo show opened in Tokyo. The Tablet PCs, from companies including Fujitsu Ltd., Toshiba Corp., NEC Corp., Sotec Co. Ltd., PaceBlade Technologies Inc., ViewSonic Corp. and Acer Inc. are most of the models that will hit Japanese retail shelves on Nov. 7 -- the date Microsoft Corp. has chosen to launch its second attempt to popularize tablet computing.
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