1435950

Information

• Patent Grant
• 1435950

• References
• Source

• Patent Number

  1,435,950

• Date Filed

  Not available

• Date Issued

  Tuesday, November 21, 1922
  102 years ago

• CPC

  • H04M19/06 - Current supply source at subordinate switching centre charged from main exchange

• US Classifications

  • 379 - Telephonic communications
  • 320 - Electricity: battery or capacitor charging or discharging