2691722

Information

• Patent Grant
• 2691722

• References
• Source

• Patent Number

  2,691,722

• Date Filed

  Not available

• Date Issued

  Tuesday, October 12, 1954
  70 years ago

• CPC

  • B61L21/06 - Vehicle-on-line indication Monitoring locking and release of the route

• US Classifications

  • 246 - Railway switches and signals