2989676

Information

• Patent Grant
• 2989676

• References
• Source

• Patent Number

  2,989,676

• Date Filed

  Not available

• Date Issued

  Tuesday, June 20, 1961
  63 years ago

• CPC

  • H02M7/046 - using discharge tubes
  • G05F1/42 - discharge tubes only
  • Y10S388/903 - Protective
  • Y10S388/914 - Thyratron or ignitron

• US Classifications

  • 388 - Electricity: motor control systems
  • 363 - Electric power conversion systems