844090

Information

• Patent Grant
• 844090

• References
• Source

• Patent Number

  844,090

• Date Filed

  Not available

• Date Issued

  Tuesday, February 12, 1907
  118 years ago

• CPC

  • H02J9/00 - Circuit arrangement for emergency or standby power supply
  • Y10T307/538 - Tap-changing or variable number of cells
  • Y10T307/983 - Fluid-pressure actuator

• US Classifications

  • 307 - Electrical transmission or interconnection systems
  • 091 - Motors: expansible chamber type
  • 200 - Electricity: circuit makers and breakers
  • 320 - Electricity: battery or capacitor charging or discharging