+Fates 63 Posted March 10, 2008 George B. Litchford Sr., a prolific aviation inventor who had a vital role in the development of the collision warning system now used on every airliner in the United States, died on Feb. 28 in Albany. He was 89 and had lived most of his life in Northport, N.Y. http://www.nytimes.com/2008/03/10/science/...ord.html?ref=us Share this post Link to post Share on other sites
