☣ Geo Engineering Weather Control and Modification ⚠ Patent US20090032214

https://www.google.com/patents/US20090032214

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☣ Weather Modification ⚠ Patent US2487287 Athmospheric Delivery Systems…

https://www.weather-modification-journal.de/70-patent-gb-2487287-atmospheric-delivery-system-aircraft-for-delivering-sub-micron-particles-into-the-stratosphere-description-of-gb2487287/