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Who invented the Photography (on film)?
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What year was Photography (on film) invented and how?
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What year was Streetcar (electric) invented and how?
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Which company is ahead in Tank (military) innovations?
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When and who invented the Bifocal Lens?
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When and who invented the Electric Fan?
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When and who invented the Ziggurats?
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Who invented the Antiseptic?
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What year was Potter's Wheel invented and how?
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Who invented the Fountain Pen?
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What year was Stirrups (metal) invented and how?
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What year was Cellophane invented and how?
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What year was Photography (on paper) invented and how?
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What year was Argon invented and how?
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Who invented the Safety Pin?
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What year was Nylon invented and how?
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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 Lightning Conductor?
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Who invented the Argon?
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Who invented the Printing Press?
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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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