Electronic Musical Resources

Electronic Musical Resources: Patents : Individuals

Lee De Forest.

This major figure in the development of the vacuum tube held over 50 patents. This selection to be augmented at a later date.

  1. "Sound Controlled Means for Producing Light Variations", Lee De Forest, US Patent 1442426. 1923
  2. "Oscillating Audion", Lee De Forest, US Patent 1201271. 1916. the basis of the Audion Piano.

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