1980816

Information

• Patent Grant
• 1980816

• References
• Source

• Patent Number

  1,980,816

• Date Filed

  Not available

• Date Issued

  Tuesday, November 13, 1934
  90 years ago

• CPC

  • G05B1/022 - using discharge tubes
  • Y10T74/18144 - Overcoming dead center

• US Classifications

  • 361 - Electricity: electrical systems and devices
  • 074 - Machine element or mechanism
  • 235 - Registers
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems