1791938

Information

• Patent Grant
• 1791938

• References
• Source

• Patent Number

  1,791,938

• Date Filed

  Not available

• Date Issued

  Tuesday, February 10, 1931
  93 years ago

• CPC

  • B61L13/005 - optically actuated
  • Y10S246/01 - Radiant energy devices

• US Classifications

  • 246 - Railway switches and signals
  • 250 - Radiant energy
  • 362 - Illumination