Here is an Extensive List Of Patents on Weather Control by the
United States Patent and Trademark Office
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0462795 – July 16, 1891 – Method Of Producing Rain-Fall
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1103490 – August 6, 1913 – Rain-Maker
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1225521 – September 4, 1915 – Protecting From Poisonous Gas In Warfare
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1338343 – April 27, 1920 – Process And Apparatus For The Production of Intense Artificial Clouds, Fogs, or Mists
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1619183 – March 1, 1927 – Process of Producing Smoke Clouds From Moving Aircraft
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1665267 – April 10, 1928 – Process of Producing Artificial Fogs
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1892132 – December 27, 1932 – Atomizing Attachment For Airplane Engine Exhausts
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1928963 – October 3, 1933 – Electrical System And Method
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1957075 – May 1, 1934 – Airplane Spray Equipment
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2097581 – November 2, 1937 – Electric Stream Generator – Referenced in 3990987
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2409201 – October 15, 1946 – Smoke Producing Mixture
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2476171 – July 18, 1945 – Smoke Screen Generator
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2480967 – September 6, 1949 – Aerial Discharge Device
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2550324 – April 24, 1951 – Process For Controlling Weather
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2582678 – June 15, 1952 – Material Disseminating Apparatus For Airplanes
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2614083 – October 14, 1952 – Metal Chloride Screening Smoke Mixture
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2633455 – March 31, 1953 – Smoke Generator
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2688069 – August 31, 1954 – Steam Generator – Referenced in 3990987
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2721495 – October 25, 1955 – Method And Apparatus For Detecting Minute Crystal Forming Particles Suspended in a Gaseous Atmosphere
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2730402 – January 10, 1956 – Controllable Dispersal Device
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2801322 – July 30, 1957 – Decomposition Chamber for Monopropellant Fuel – Referenced in 3990987
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2881335 – April 7, 1959 – Generation of Electrical Fields
These are just a few listed. Please view the entire long list of proof here: https://www.geoengineeringwatch.org/links-to-geoengineering-patents/