1424509

Information

• Patent Grant
• 1424509

• References
• Source

• Patent Number

  1,424,509

• Date Filed

  Not available

• Date Issued

  Tuesday, August 1, 1922
  102 years ago

• CPC

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

• US Classifications

  • 246 - Railway switches and signals