1979422

Information

• Patent Grant
• 1979422

• References
• Source

• Patent Number

  1,979,422

• Date Filed

  Not available

• Date Issued

  Tuesday, November 6, 1934
  90 years ago

• CPC

  • H02M7/533 - using discharge tubes only

• US Classifications

  • 363 - Electric power conversion systems
  • 331 - Oscillators