3342940

Information

• Patent Grant
• 3342940

• References
• Source

• Patent Number

  3,342,940

• Date Filed

  Not available

• Date Issued

  Tuesday, September 19, 1967
  56 years ago

• CPC

  • H04M15/10 - Metering calls from calling party
  • H04M15/06 - Recording class or number of calling
  • H04M15/18 - according to duration of the call , or the communication

• US Classifications

  • 379 - Telephonic communications