2703879

Information

• Patent Grant
• 2703879

• References
• Source

• Patent Number

  2,703,879

• Date Filed

  Not available

• Date Issued

  Tuesday, March 8, 1955
  70 years ago

• CPC

  • G05D3/122 - without modulation
  • Y10T307/375 - Different frequencies

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 318 - Electricity: motive power systems
  • 340 - Communications: electrical