Tour of Bedford, Massachusetts-based iRobot Corp.

The IT model robot is displayed at iRobot Corp. headquarters in Bedford, Massachusetts, U.S., on Monday, June 6, 2011. IRobot Corp. makes the Roomba and Scooba floor-cleaning machines and the PackBot, a robot that can search caves and help with bomb-disposal missions. Photographer: Scott Eells/Bloomberg

Scott Eells / Bloomberg

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