2139898

Information

• Patent Grant
• 2139898

• References
• Source

• Patent Number

  2,139,898

• Date Filed

  Not available

• Date Issued

  Tuesday, December 13, 1938
  86 years ago

• CPC

  • H03B11/08 - interrupter being discharge tube

• US Classifications

  • 315 - Electric lamp and discharge devices: systems