6 hours America’s Most Prolific Inventors Changed Our World24/7 Wall St.
The first patent issued for an invention by an American inventor was in 1790 for an improvement to potash production, and it was signed by President George Washington. Since then, over 10 million patents have been issued by the United States Patent and Trademark Office. Honestly, the vast majority of these have come to nothing. […]
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Politics · U.S. · Washington · World
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