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TitleDateType
51 Philo T. Farnsworth, Right, Inventor of Television.1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939; 1940; 1941; 1942; 1943; 1944; 1945; 1946; 1947; 1948; 1949
52 Seymour Turner-19361936
53 Unidentified Equipment.1930; 1931; 1932; 1933; 1934; 1935; 1936; 1937; 1938; 1939
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