United States Patent and Trademark Office
https://www.geoengineeringwatch.org/links-to-geoengineering-patents/
  https://www.geoengineeringwatch.org/links-to-geoengineering-patents/
 United States Patent and Trademark Office
https://www.geoengineeringwatch.org/links-to-geoengineering-patents/
  
  
                               
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