1775886

Information

• Patent Grant
• 1775886

• References
• Source

• Patent Number

  1,775,886

• Date Filed

  Not available

• Date Issued

  Tuesday, September 16, 1930
  95 years ago

• CPC

  • H01J19/68 - Specified gas introduced into the tube at low pressure

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 331 - Oscillators