3608820– September 20, 1971 – Treatment of Atmospheric Conditions by Intermittent Dispensing of Materials Therein 3613992 – October 19, 1971 – Weather Modification Method 3630950 – December 28, 1971 – Combustible Compositions For Generating Aerosols, Particularly Suitable For Cloud Modification And Weather Control And Aerosolization Process USRE29142 – This patent is a reissue of patent US3630950 – Combustible compositions for generating aerosols, particularly suitable for cloud modification and weather control and aerosolization process 3659785 – December 8, 1971 – Weather Modification Utilizing Microencapsulated Material 3666176 – March 3, 1972 – Solar Temperature Inversion Device 3677840 – July 18, 1972 – Pyrotechnics Comprising Oxide of Silver For Weather Modification Use 3722183 – March 27, 1973 – Device For Clearing Impurities From The Atmosphere 3769107 – October 30, 1973 – Pyrotechnic Composition For Generating Lead Based Smoke 3784099 – January 8, 1974 – Air Pollution Control
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