1659045

Information

• Patent Grant
• 1659045

• References
• Source

• Patent Number

  1,659,045

• Date Filed

  Not available

• Date Issued

  Tuesday, February 14, 1928
  97 years ago

• CPC

  • H04M19/00 - Current supply arrangements for telephone systems
  • Y10T307/669 - Differing capacities

• US Classifications

  • 379 - Telephonic communications
  • 307 - Electrical transmission or interconnection systems
  • 320 - Electricity: battery or capacitor charging or discharging