2586291

Information

• Patent Grant
• 2586291

• References
• Source

• Patent Number

  2,586,291

• Date Filed

  Not available

• Date Issued

  Tuesday, February 19, 1952
  73 years ago

• CPC

  • G05D23/2035 - the sensing element being a ionized gas

• US Classifications

  • 313 - Electric lamp and discharge devices