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Cree raises stakes in LED bulb race

LED maker Cree is gunning for the demise of the 60-watt incandescent bulb with a demonstration LED bulb that's energy efficient and disperses light in all directions. The company today introduced a dimmable LED bulb, which it expects to get EnergyStar certification in the fall. Today's date coincides with the day 131 years ago when Thomas Edison received a key patent for incandescent bulbs.

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