3061687

Information

• Patent Grant
• 3061687

• References
• Source

• Patent Number

  3,061,687

• Date Filed

  Not available

• Date Issued

  Tuesday, October 30, 1962
  63 years ago

• CPC

  • 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
  • 178 - Telegraphy