1753568

Information

• Patent Grant
• 1753568

• References
• Source

• Patent Number

  1,753,568

• Date Filed

  Not available

• Date Issued

  Tuesday, April 8, 1930
  94 years ago

• CPC

  • B61L29/284 - using rail-contacts, rail microphones, or the like, controlled by the vehicle
  • Y10S200/08 - Disturbance

• US Classifications

  • 246 - Railway switches and signals
  • 200 - Electricity: circuit makers and breakers