3881155

Information

• Patent Grant
• 3881155

• References
• Source

• Patent Number

  3,881,155

• Date Filed

  Not available

• Date Issued

  Tuesday, April 29, 1975
  49 years ago

• CPC

  • H04H40/72 - for noise suppression
  • G01R29/06 - Measuring depth of modulation
  • H04B1/1027 - assessing signal quality or detecting noise/interference for the received signal

• US Classifications

  • 455 - Telecommunications