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robot battle japan us mann pkg_00005619

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    U.S. vs. Japan: Robot making rivals set for battle

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U.S. vs. Japan: Robot making rivals set for battle

A U.S. robot maker has challenged its Japanese rival to a mechanical duel and sparks are set to fly. CNN's Jonathan Mann explains.

U.S. vs. Japan: Robot making rivals set for battle

A U.S. robot maker has challenged its Japanese rival to a mechanical duel and sparks are set to fly. CNN's Jonathan Mann explains.