2543869

Information

• Patent Grant
• 2543869

• References
• Source

• Patent Number

  2,543,869

• Date Filed

  Not available

• Date Issued

  Tuesday, March 6, 1951
  73 years ago

• CPC

  • B61L7/083 - Common line wire control using currents of different amplitudes, polarities, frequencies, or the like

• US Classifications

  • 340 - Communications: electrical
  • 246 - Railway switches and signals
  • 367 - Communications, electrical: acoustic wave systems and devices
  • 370 - Multiplex communications