The Expansion of American Industry: The Technological Revolution The years following the Civil War saw a dramatic increase in the number of inventions submitted to the Patent and Trademark Office. A patent is a license to make, sell or use an invention. Number of inventions patented.
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By blyView Electric power PowerPoint (PPT) presentations online in SlideServe. SlideServe has a very huge collection of Electric power PowerPoint presentations. You can view or download Electric power presentations for your school assignment or business presentation. Browse for the presentations on every topic that you want.