3218636

Information

• Patent Grant
• 3218636

• References
• Source

• Patent Number

  3,218,636

• Date Filed

  Not available

• Date Issued

  Tuesday, November 16, 1965
  59 years ago

• CPC

  • G10K1/062 - electrically operated
  • H04Q5/02 - with direct connection for all subscribers

• US Classifications

  • 340 - Communications: electrical
  • 310 - Electrical generator or motor structure
  • 379 - Telephonic communications