2964680

Information

• Patent Grant
• 2964680

• References
• Source

• Patent Number

  2,964,680

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1960
  64 years ago

• CPC

  • H04M1/56 - Arrangements for indicating or recording the called number at the calling subscriber's set
  • H03K3/37 - by the use, as active elements, of gas-filled tubes

• US Classifications

  • 315 - Electric lamp and discharge devices: systems
  • 340 - Communications: electrical