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William R. Hewlett

Born: 1913
Birthplace: Ann Arbor, Mich.

Variable frequency oscillation generator—Also known as the “audio oscillator,” this was the first practical method of generating high-quality audio frequencies needed in communications, geophysics, medicine, and defense work. Walt Disney Studios ordered eight audio oscillators to use in producing the soundtrack of the film, “Fantasia.” (1992)

Died: 2001

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M. Stephen HeilmanThe National Inventors Hall of FameRene Alphonse Higonnet

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