>>3381118 (lb)
patentfag here, just wanted to weigh in on the previous accusation of shitposting. Here are a few examples of relevant patents ... There are many many many more. Sauced from USPTO and the Global Dossier
3608820– September 20, 1971 – Treatment of Atmospheric Conditions by Intermittent Dispensing of Materials Therein
3899144 – August 12, 1975 – Powder contrail generation
3994437 – November 30, 1976 – Broadcast dissemination of trace quantities of biologically active chemicals
4412654 – November 1, 1983 – Laminar microjet atomizer and method of aerial spraying of liquids
5104069 – April 14, 1992 – Apparatus and method for ejecting matter from an aircraft
3630950 – December 28, 1971 – Combustible Compositions For Generating Aerosols, Particularly Suitable For Cloud Modification And Weather Control And Aerosolization Process