870622

Information

• Patent Grant
• 870622

• References
• Source

• Patent Number

  870,622

• Date Filed

  Not available

• Date Issued

  Tuesday, November 12, 1907
  117 years ago

• CPC

  • B61L25/065 - for signalling systems on the vehicle using current conduction

• US Classifications

  • 246 - Railway switches and signals
  • 126 - Stoves and furnaces
  • 340 - Communications: electrical