1707142

Information

• Patent Grant
• 1707142

• References
• Source

• Patent Number

  1,707,142

• Date Filed

  Not available

• Date Issued

  Tuesday, March 26, 1929
  95 years ago

• CPC

  • H02M1/146 - using discharge tubes

• US Classifications

  • 363 - Electric power conversion systems
  • 313 - Electric lamp and discharge devices
  • 315 - Electric lamp and discharge devices: systems