3278687

Information

• Patent Grant
• 3278687

• References
• Source

• Patent Number

  3,278,687

• Date Filed

  Not available

• Date Issued

  Tuesday, October 11, 1966
  58 years ago

• CPC

  • H04Q5/02 - with direct connection for all subscribers
  • H04M15/36 - Charging, billing or metering arrangements for party-lines

• US Classifications

  • 379 - Telephonic communications
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems