2856457

Information

• Patent Grant
• 2856457

• References
• Source

• Patent Number

  2,856,457

• Date Filed

  Not available

• Date Issued

  Tuesday, October 14, 1958
  66 years ago

• CPC

  • H04L1/248 - Distortion measuring systems
  • H04L12/2697 - Testing equipment; Routine testing
  • H04L25/245 - for start-stop signals
  • H04L43/50 - Testing arrangements
  • Y04S40/168 - for performance monitoring

• US Classifications

  • 178 - Telegraphy