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The blue laser may be a ways off yet. But in the meantime there are boatloads of potential applications for the currently shipping blue LEDs. Custom- and full-spectrum lights that don't burn out (and use less energy), full color LCD displays, and just about anything else you can think of that requires any color of light in a small package. Oh, cheaper green traffic lights are another application (especially in high traffic areas where a burned out light would be more of a hazard and/or more difficult to replace).
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