2922389

Information

• Patent Grant
• 2922389

• References
• Source

• Patent Number

  2,922,389

• Date Filed

  Not available

• Date Issued

  Tuesday, January 26, 1960
  64 years ago

• CPC

  • B61L5/1818 - using mobile coloured screen
  • Y10T74/2156 - Weight type

• US Classifications

  • 116 - Signals and indicators
  • 074 - Machine element or mechanism
  • 246 - Railway switches and signals