William Phillips Hall (February 1, 1864 – August 15, 1937) was a lay evangelist, railroad transportation executive, and electrical engineer. He founded the Hall Signal Company, headquartered in New York City, and invented signal mechanisms to improve railroad safety.
William Phillips Hall (February 1, 1864 – August 15, 1937) was a lay evangelist, railroad transportation executive, and electrical engineer. He founded the Hall Signal Company, headquartered in New York City, and invented signal mechanisms to improve railroad safety.
Source: Wikipedia "William Phillips Hall" · CC BY-SA 4.0
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