2638571

Information

• Patent Grant
• 2638571

• References
• Source

• Patent Number

  2,638,571

• Date Filed

  Not available

• Date Issued

  Tuesday, May 12, 1953
  71 years ago

• CPC

  • G05F1/26 - combined with discharge tubes or semiconductor devices

• US Classifications

  • 323 - Electricity: power supply or regulation systems