On the home front, a house-cleaning robot is much desired, as is a searching contraption that would find lost keys and books--sort of like Google, but for the physical world.

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On the home front, a house-cleaning robot is much desired, as is a searching contraption that would find lost keys and books--sort of like Google (nasdaq: GOOG - news - people ), but for the physical world.

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So, obviously, it was with no small amount of skepticism that I listened to Mr. Savadian as he touted his window-cleaning robot.

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Ecovac manufactures the Winbot, a window-cleaning robot.

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Why is iRobot, purveyor of the Roomba and Scooba home-cleaning robots, making a three-to-five-foot tall robot with an Apple iPad for a head?

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The group has announced seven multi-million-dollar prizes for achievements ranging from landing a robot on the moon to cleaning up an oil spill, and has awarded four prizes.

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