2618740

Information

• Patent Grant
• 2618740

• References
• Source

• Patent Number

  2,618,740

• Date Filed

  Not available

• Date Issued

  Tuesday, November 18, 1952
  72 years ago

• CPC

  • B61L23/22 - for controlling traffic in two directions over the same pair of rails

• US Classifications

  • 246 - Railway switches and signals
  • 361 - Electricity: electrical systems and devices