3341665

Information

• Patent Grant
• 3341665

• References
• Source

• Patent Number

  3,341,665

• Date Filed

  Not available

• Date Issued

  Tuesday, September 12, 1967
  57 years ago

• CPC

  • H03K17/70 - having two electrodes and exhibiting negative resistance
  • H04M19/02 - providing ringing current or supervisory tones
  • Y10T307/878 - Electronically controlled relay

• US Classifications

  • 379 - Telephonic communications
  • 307 - Electrical transmission or interconnection systems