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Clock Mainspring

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The Autonomous Servant of Philon

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Shakey the Robot

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SRI International

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Friction and Pulley

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Design for a Lock at San Marco

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Orso Ipato: The First True Venetian Doge

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Verge Escapement

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Compound Pulley System for Hoisting - Leonardo Da Vinci

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Establishment of the Doge in Venice

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