1720352

Information

• Patent Grant
• 1720352

• References
• Source

• Patent Number

  1,720,352

• Date Filed

  Not available

• Date Issued

  Tuesday, July 9, 1929
  95 years ago

• CPC

  • G05F3/12 - being glow discharge tubes

• US Classifications

  • 323 - Electricity: power supply or regulation systems
  • 315 - Electric lamp and discharge devices: systems
  • 327 - Miscellaneous active electrical nonlinear devices, circuits, and systems
  • 330 - Amplifiers