2957952

Information

• Patent Grant
• 2957952

• References
• Source

• Patent Number

  2,957,952

• Date Filed

  Not available

• Date Issued

  Tuesday, October 25, 1960
  65 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
  • H04Q3/00 - Selecting arrangements

• US Classifications

  • 379 - Telephonic communications