3483332

Information

• Patent Grant
• 3483332

• References
• Source

• Patent Number

  3,483,332

• Date Filed

  Not available

• Date Issued

  Tuesday, December 9, 1969
  55 years ago

• CPC

  • H04M1/26 - Devices for signalling identity of wanted subscriber
  • H04M1/515 - by generating or selecting other signals than trains of pulses of similar shape or other signals than currents of one or more different frequencies

• US Classifications

  • 379 - Telephonic communications
  • 340 - Communications: electrical