1827633

Information

• Patent Grant
• 1827633

• References
• Source

• Patent Number

  1,827,633

• Date Filed

  Not available

• Date Issued

  Tuesday, October 13, 1931
  93 years ago

• CPC

  • B61L5/125 - Fixed signals, beacons, or the like

• US Classifications

  • 246 - Railway switches and signals