Air conditioning
In 1902, the first modern electrical air conditioning unit was invented by Willis Carrier in Buffalo, New York. After graduating from Cornell University, Carrier found a job at the Buffalo Forge Company. There, he began experimenting with air conditioning as a way to solve an application problem for the Sackett-Wilhelms Lithographing and Publishing Company in Brooklyn, New York. The first air conditioner, designed and built in Buffalo by Carrier, began working on 17 July 1902.
The Icee Company
Knedlik partnered with the John E Mitchell Company in Dallas to develop the machine, for which Knedlik received a patent in 1960. The first machine was made from a car air conditioning unit. It worked by combining and freezing water, carbon dioxide, and a flavor mix. After 5 years Knedlik's idea had become the iconic Icee Machine after drawing the attention of 7-Eleven. The convenience store chain purchased several machines and later changed the name to Slurpee based on the slurping sound people make when drinking the beverage.