Chester Carlson Invents Machine To Copy Documents

The model department of america Patent Workplace in Washington is illuminated here and there with the unique fashions of the very nice inventions. In one...

Professor W.C. Röntgen Discovers X-Rays

The mannequin division of the USA Patent Workplace in Washington is illuminated here and there with the original models of the very great innovations. In...

English Gentleman Invents Photography

The model division of america Patent Workplace in Washington is illuminated here and there with the original models of the very nice inventions. In one...

Charles Babbage Invents Mechanical Calculator

The mannequin department of america Patent Workplace in Washington is illuminated here and there with the unique fashions of the very great innovations. In one...

Ferry Boatman Challenges Steamboat Monopoly

The mannequin department of america Patent Workplace in Washington is illuminated right here and there with the original models of the very great inventions. In...

Printer Invents Typewriting Machine

The mannequin department of the USA Patent Office in Washington is illuminated right here and there with the unique fashions of the very nice...

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