1992433

Information

• Patent Grant
• 1992433

• References
• Source

• Patent Number

  1,992,433

• Date Filed

  Not available

• Date Issued

  Tuesday, February 26, 1935
  89 years ago

• CPC

  • H03G3/16 - having discharge tubes

• US Classifications

  • 455 - Telecommunications
  • 333 - Wave transmission lines and networks
  • 361 - Electricity: electrical systems and devices