2617920

Information

• Patent Grant
• 2617920

• References
• Source

• Patent Number

  2,617,920

• Date Filed

  Not available

• Date Issued

  Tuesday, November 11, 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