3801745

Information

• Patent Grant
• 3801745

• References
• Source

• Patent Number

  3,801,745

• Date Filed

  Not available

• Date Issued

  Tuesday, April 2, 1974
  50 years ago

• CPC

  • H04M15/88 - Provision for limiting connection, or expenditure
  • H04M15/36 - Charging, billing or metering arrangements for party-lines
  • H04M2215/0116 - Provision for limiting expenditure

• US Classifications

  • 379 - Telephonic communications