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PATENTS  
The first U.S. Congress adopted a Patent Act, in 1790. Since its founding in 1790 the United States Patent and Trademark Office (USPTO) has issued over 7 million patents, of that number approximately 70 thousand have become legitimate products.
Book Resources on the subject of Patents. Patent Information including history and purpose.
First U.S. Patent Issued  July 31, 1790 Patent Scorecard the top ten inventors
Historic Patents where to find and where to buy Prolific Inventors based upon total Patents issued 
Historic Patents 1790 - 1836 Rumor Has It everything has been invented.
Historic Patents 1836 - 1975 Web Resources dedicated to Patents.
Historic Patents 1976 - Present  
 
 
   
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