2004577

Information

• Patent Grant
• 2004577

• References
• Source

• Patent Number

  2,004,577

• Date Filed

  Not available

• Date Issued

  Tuesday, June 11, 1935
  90 years ago

• CPC

  • C09B35/26 - the tetrazo component being a derivative of a diaryl urea
  • H01J65/042 - by an external electromagnetic field

• US Classifications

  • 313 - Electric lamp and discharge devices
  • 340 - Communications: electrical