2000678

Information

• Patent Grant
• 2000678

• References
• Source

• Patent Number

  2,000,678

• Date Filed

  Not available

• Date Issued

  Tuesday, May 7, 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