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Who invented the Safety Pin?
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Who invented the Spinning Mule?
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Which company is ahead in Streetcar (railed) innovations?
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Which company is ahead in Locomotive innovations?
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Who invented the Argon?
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What year was Classification of Data for Libraries invented and how?
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Which company is ahead in Autogiro innovations?
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What year was Autogiro invented and how?
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Who invented the Stirrups (metal)?
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What year was Cement invented and how?
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Who invented the Welder (electric welding)?
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When and who invented the Ballpoint Pen?
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Who invented the Potter's Wheel?
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What year was Revolver invented and how?
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Which company is ahead in Machine Gun innovations?
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Who invented the Dacron?
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Who invented the Carburettor?
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Who invented the Stethoscope?
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Who invented the Photography (on paper)?
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When and who invented the X-ray?
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What year was Arc Lamp invented and how?
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Who invented the Telescope (1st refracting)?
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When and who invented the Electric Generation (Static)?
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Who invented the Loom (power)?
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When and who invented the Time Recorder?
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What year was Glider invented and how?
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Who invented the Cannon (iron)?
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What year was Phonograph invented and how?
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What year was Gas Lighting invented and how?
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What year was Razor (Safety) invented and how?
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Who invented the Uranium?
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Who invented the Propeller (ship)?
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What year was Airship (rigid) invented and how?
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What year was Submarine invented and how?
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