3290448

Information

• Patent Grant
• 3290448

• References
• Source

• Patent Number

  3,290,448

• Date Filed

  Not available

• Date Issued

  Tuesday, December 6, 1966
  58 years ago

• CPC

  • H04Q1/30 - Signalling arrangements Manipulation of signalling currents

• US Classifications

  • 375 - Pulse or digital communications
  • 455 - Telecommunications