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Though news of the latest iPhone or Facebook remodel dominated headlines in 2011, many other...

Though news of the latest iPhone or Facebook remodel dominated headlines in 2011, many other firms flexed their own creative muscles. WSJ spotlights some of the year's most impressive inventions: IBM's Watson computer, Northrop's (NOC) X-47B drone, Edwards Lifesciences' (EW) Sapien transcatheter heart valve, Intel's (INTC) tri-gate transistors, and more.
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