2013390

Information

• Patent Grant
• 2013390

• References
• Source

• Patent Number

  2,013,390

• Date Filed

  Not available

• Date Issued

  Tuesday, September 3, 1935
  89 years ago

• CPC

  • H05G1/18 - with polyphase ac of low frequency rectified

• US Classifications

  • 378 - X-ray or gamma ray systems or devices
  • 315 - Electric lamp and discharge devices: systems