October 24, 1950 | Inventor Vincent J Schaefer Vonnegut Bernard | General Electric Company, a corporation of New York | US Patent_US2527230 |

“The present invention comprises a process whereby crystallization in whole or in .part is caused in supersaturated vapor-containing gases and supercooled liquids. It relates in particular to the development of ice crystals in aerosols comprising supercooled water droplets…”

Link To Full Patent_US2527230_Method of Crystal Formation and Precipitation