William D. Coolidge
William D. Coolidge
Born: 1873Birthplace: Hudson, Mass.
Vacuum tube—Coolidge invented ductile tungsten, the filament material still used in incandescent lamps. He also invented the “Coolidge tube”, the model upon which all X-ray tubes for medical applications are patterned. (1975)
Died: 1974| Lloyd H. Conover | The National Inventors Hall of Fame | Harry Coover |
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