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.
Arthur Frederick Ostrander
Arthur Frederick Ostrander, Sr. (February 14, 1895 – February 1978), was an assistant scientist. He worked with inventor George Poe. In his childhood he worked with Poe (mid-1907 to 1908), who taught him how an artificial respiration device functions. His assistance to Poe was instrumental in the successful development of the respiration device, as he performed the fine detail work and metal fabrication that Poe could no longer do. His face came to be one of the most well known of the time, having been featured in several large circulation newspapers."