2912557

Information

• Patent Grant
• 2912557

• References
• Source

• Patent Number

  2,912,557

• Date Filed

  Not available

• Date Issued

  Tuesday, November 10, 1959
  65 years ago

• CPC

  • G05D23/2453 - using discharge tubes

• US Classifications

  • 219 - Electric heating
  • 361 - Electricity: electrical systems and devices