Question: Who developed the prototype pacemaker used by the 34th President of the USA?
Sentence (from "Dwight D. Eisenhower"): Dwight David "Ike" Eisenhower ( ; October 14, 1890 – March 28, 1969) was an American politician and Army general who served as the 34th President of the United States from 1953 until 1961.
Relevant evidence: Yes