Henry Green applied for a patent on vacuum tubes

12/21/1912 |

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Henry Green applied for a patent on improvements in vacuum-tubes.

Green applied for a patent on x-ray tubes on July 12, 1912.

  1. Green received this patent, No. 1,068,426, on July 29, 1913.
  2. Green will die on March 4, 1914.

United States Patent Office, "Vacuum Tube," Patent No. 1,068,426, July 29, 1913.

Henry Green

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