2077848

Information

• Patent Grant
• 2077848

• References
• Source

• Patent Number

  2,077,848

• Date Filed

  Not available

• Date Issued

  Tuesday, April 20, 1937
  87 years ago

• CPC

  • B61L3/10 - using current passing between devices along the route and devices on the vehicle train

• US Classifications

  • 246 - Railway switches and signals