Question: When was the American entrepreneur and engineer died based on who's patent modern trains rely upon a fail-safe air brake system?
Sentence (from "George Westinghouse"): George Westinghouse Jr. (October 6, 1846 – March 12, 1914) was an American entrepreneur and engineer who invented the railway air brake and was a pioneer of the electrical industry, gaining his first patent at the age of 19.
Relevant evidence: Yes