1042482

Information

• Patent Grant
• 1042482

• References
• Source

• Patent Number

  1,042,482

• Date Filed

  Not available

• Date Issued

  Tuesday, October 29, 1912
  112 years ago

• CPC

  • H04Q1/4423 - using one signalling frequency
  • B61L15/0045 - Destination indicators, identification panels or distinguishing signs on the vehicles

• US Classifications

  • 340 - Communications: electrical
  • 246 - Railway switches and signals