3805056

Information

• Patent Grant
• 3805056

• References
• Source

• Patent Number

  3,805,056

• Date Filed

  Not available

• Date Issued

  Tuesday, April 16, 1974
  50 years ago

• CPC

  • B61L3/004 - Memory means reproducing during the running of the vehicle or vehicle train

• US Classifications

  • 246 - Railway switches and signals
  • 340 - Communications: electrical
  • 360 - Dynamic magnetic information storage or retrieval