Reginald Fessenden
Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born inventor, who did a majority of his work in the United States and also claimed U.S. citizenship through his American-born father. During his life he received hundreds of patents in various fields, most notably ones related to radio and sonar.
Roy F. Brissenden
Roy Frampton Brissenden (19 April 1919 – 13 March 1999) was a NASA physicist, engineer, teacher and inventor whose pioneering and imaginative work made possible the advancement and accomplishments of the Mercury, Gemini, Apollo, and Space Shuttle programs.