3864731

Information

• Patent Grant
• 3864731

• References
• Source

• Patent Number

  3,864,731

• Date Filed

  Not available

• Date Issued

  Tuesday, February 4, 1975
  49 years ago

• CPC

  • B60L3/12 - Recording operating variables; Monitoring of operating variables
  • G07C5/0875 - using magnetic data carriers
  • B60L2200/26 - Rail vehicles
  • Y02T90/16 - Information or communication technologies improving the operation of electric vehicles

• US Classifications

  • 360 - Dynamic magnetic information storage or retrieval
  • 346 - Recorders