3886420

Information

• Patent Grant
• 3886420

• References
• Source

• Patent Number

  3,886,420

• Date Filed

  Not available

• Date Issued

  Tuesday, May 27, 1975
  49 years ago

• CPC

  • B61L3/002 - Recorders on the vehicle
  • B60L3/08 - Means for preventing excessive speed of the vehicle
  • B60L2200/26 - Rail vehicles
  • Y02T10/7258 - Optimisation of vehicle performance
  • Y10S388/902 - Compensation
  • Y10S388/922 - Tuned or resonant circuit

• US Classifications

  • 388 - Electricity: motor control systems
  • 246 - Railway switches and signals