902798

Information

• Patent Grant
• 902798

• References
• Source

• Patent Number

  902,798

• Date Filed

  Not available

• Date Issued

  Tuesday, November 3, 1908
  116 years ago

• CPC

  • H01H43/30 - with timing of actuation of contacts due to thermal action
  • G05D23/306 - using semiconductor devices

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 315 - Electric lamp and discharge devices: systems
  • 340 - Communications: electrical